React.js Developer Job Description Template

An effective description can help you hire the best fit for your job. Check out our tips to provide details that skilled professionals are looking for.

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Tips for Writing a React.js Developer Job Description

A React.js developer is a professional software developer or web developer who uses React to create websites and apps. React is a software framework developed by Facebook and powered by JavaScript. React Native is a React framework that allows React.js developers to use React to create native apps for smartphones and tablets. React.js developers are therefore capable of writing software for both websites and apps.

In this article, we will cover a sample job description, exploring the daily responsibilities and necessary qualifications for a React.js developer.

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The Job Overview

We are seeking a dedicated React.js front-end developer to join our growing company. You will work as part of a team to design and develop high-quality software solutions for web applications and mobile apps using React.

As a React.js developer, you will implement new features and maintain existing code using React and other standard tools in the React ecosystem, such as Node.js and Yarn. Your duties will include designing software solutions to meet project requirements, maintaining and refactoring existing code, writing tests, and fixing bugs.

Responsibilities

Below are some of the responsibilities a React.js developer is expected to assume in their position:

Maintain existing React systems, including fixing bugs
Design and develop new custom components to meet project requirements
Install and configure server environments for React deployments
Maintain and update project dependencies as well as fix any conflicts
Working with other JavaScript developers and software engineers to develop front-end and back-end architecture that’s well structured and flexible, along with the APIs to support it

Job Qualifications and Skill Sets

Below are the qualifications expected of a React.js developer:

Bachelor’s degree in computer science, software development, engineering, or a related technical field
Proficient with the latest versions of ECMAScript (JavaScript) as well as HTML and CSS
Knowledge of React and common tools used in the wider React ecosystem, such as Node.js and npm
Familiarity with common programming tools such as Redux, IDEs, RESTful APIs, Git repositories, TypeScript, version control software, and remote deployment tools
An understanding of common programming paradigms and fundamental React principles, such as React components, hooks, and the React lifecycle

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4 Steps to Creating a React.js Developer Job Description That Fits Your Needs

With a sample React.js developer job description in hand, it’s time to write that job post.

Writing the perfect React.js developer job description will require some technical knowledge of React. For example, stating whether the job is for a web app or a native app is important because React Native (for native app development) is distinct from React.js, and not all developers will be familiar with both. Below are some factors to consider when writing your job description:

1. Determine What Type of React.js Developer You Need

React.js is a framework created by Facebook to make building web apps easier. It is built using JavaScript, a popular programming language for both front-end and back-end development. Some developers may be more comfortable with front-end development, meaning they specialize in how an app looks and feels to the user. Back-end developers will be more familiar with the nitty-gritty of programming functionality, as well as how to work with Node.js and npm to perform maintenance tasks, add and maintain dependencies, and run new builds from the command line. Full-stack developers are comfortable with both front-end and back-end development.

2. Employee vs. Independent Contractor vs. Agency

React.js developers can be hired in-house, contracted through an agency, or hired independently as a freelancer. A freelance React.js developer might specialize in one area and could be hired to fill a single talent gap within your team. An agency will have a React.js developer team that can help with various aspects of your project. It all depends on how granular you want to get with your talent staffing needs. Worker classification can be tricky, so check out our compliance services resources page for more information.

3. Experience

The more experienced a React.js developer is, the more complex tasks they’ll be able to perform for your business. A junior React.js developer might help by maintaining existing components and working on individual units of code within a wider system.

Alternatively, you might consult with a full-time senior React.js developer to help with building and maintaining entire projects, including configuring server environments, making the user interface more user-friendly, and dealing with testing and deployments. Your project scope will determine the type of experience required for the job.

4. Industry

React.js is part of the wider JavaScript ecosystem, which is formally known as ECMAScript. React.js is simply a framework, which is a tool that helps developers to structure and write apps quickly by providing a common set of programming tools. Developers of other JavaScript frameworks, such as Vue.js and Ember.js, may adapt to work with React, while other developers will choose to specialize specifically in React.

Next Steps

Now that you know how to write an effective React.js developer job description, you’re ready to check out our list of top React.js developers on Upwork. Their qualifications are listed along with their experience, giving you all the information you need to find the right fit for you.

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React.js Developers you can meet on Upwork

$35 hourly
Muhammad N.
- 5.0
- (22 jobs)
Ali Pur Chattah, PUNJAB
React.js
Redux
Flask
Node.js
Social Media Account Integration
HTML5
React
TypeScript
iOS
Android
JavaScript
GraphQL
MongoDB
React Native
Python

💎 Upwork Top-Rated Developer 💎 💰I'll give life to your ideas 💰 Full-stack software developer with 5 years of experience specializing in designing and developing custom websites and large-scale applications with a focus on client satisfaction. I am well equipped in following skills: - React - Material-UI - Materialize-CSS - React Native - Native Base - MongoDB - MySQL - Alchemy - Postgres SQL - Firebase - GraphQL - Python - Flask - Web Scrapping Server/Backend Development: I can write backend or your mobile with secure management. It will be restfull so you can use it anywhere for web and mobile. I will write secure backend in flask with graphql. We will use Attribute-based Access Control(ABAC) and Graph-based Access Control(GBAC) for authorization and prevent from malicious users. Web and Mobile App Development: Looking to build Hybrid App using React Native ? If yes, please feel free to connect with me as I have exemplary skills and experience in building highly scalable and robust cross platform mobile apps using react native and firebase. My Services & Expertise: - UI/UX improvements. - Bug fixing in existing app. - Design improvements. - API integration. - Camera, Audio/Video features. - Server API development to use it with app. - Cross Device support - Firebase integration. - Push Notifications. - Social Logins. - Location based app. - Maps integration. DEVELOPMENT PROCESS Collect & Analyze Client Requirements Wireframing App Flow Design Development Maintenance & Support Looking forward to hearing your idea and/or business needs and help you build it!
$45 hourly
Asmerom Estifanos E.
- 5.0
- (52 jobs)
Addis Ababa, AA
React.js
Microsoft PowerPoint
Desktop Application
Tailwind CSS
Git
RESTful API
ExpressJS
MongoDB
Node.js
React
Visual Basic
JavaScript
C++
AutoLISP
Autodesk AutoCAD

I help engineering firms, manufacturers, and businesses automate complex workflows through software development, CAD automation, and AI-powered systems. Unlike most developers, I bring 15+ years of professional Civil Engineering experience combined with deep software development expertise. I understand drawings, engineering standards, design workflows, technical documentation, and the operational realities behind engineering projects. My work focuses on delivering production-ready solutions that save time, reduce errors, and automate repetitive processes. What I Do CAD & Engineering Automation • AutoLISP / Visual LISP Development • AutoCAD & ZWCAD Customization • VBA Automation • Drawing Cleanup & Standardization • Block & Attribute Automation • Batch Processing Tools • CAD Standards Enforcement • Legacy Script Debugging & Modernization • Engineering Workflow Automation • AI-Assisted Drafting Systems Software Development • Python Development • JavaScript / TypeScript • React, Node.js, Express, MongoDB (MERN) • REST API Development & Integration • Desktop & Web Applications • Database Design • Data Processing & Automation • Business Process Automation • Custom Internal Tools • Performance Optimization Systems Programming • Compiler Development • Interpreter Development • Language Processing Tools • Parsing & Code Analysis • Algorithm Design & Optimization • Technical Problem Solving AI & Agentic Systems • Claude API Integration • OpenAI API Integration • Claude Code • OpenAI Codex • Custom MCP Servers • Custom Skills Development • Retrieval-Augmented Generation (RAG) • Agentic Workflows • n8n Automation • AI Application Modernization • Multi-Agent Systems Recent Project Types • AutoCAD automation tools that reduce hours of manual drafting work to minutes • Custom engineering workflow systems • Compiler and interpreter implementations • AI-powered engineering assistants • Document and file processing automation • Business workflow automation platforms • Custom web applications and internal tools • CAD standards enforcement systems • Data extraction and transformation pipelines • LLM-powered applications using modern AI stacks Why Clients Hire Me • 15+ years of real engineering experience • Strong software engineering fundamentals • Ability to understand complex technical domains quickly • Production-focused solutions, not demos • Clear communication and reliable delivery • Long-term maintainable code • Available 30+ hours per week
$40 hourly
Rommelie L.
- 5.0
- (23 jobs)
Manila, METRO MANILA
React.js
SQL
Amazon Web Services
CI/CD
Database
FastAPI
Next.js
LangChain
Node.js
React
Python
API Integration
Automation
Machine Learning
AI Agent Development
Large Language Model
Mobile App
SaaS Development
AI Development
Web Development
Full-Stack Development

👋 Hello, dear client. Thanks for visiting my profile. I’m an AI/ML Engineer and Full-Stack Developer who helps startups and businesses build AI-driven, scalable, and production-ready solutions. I combine deep knowledge in machine learning, GenAI, and web app development to deliver fast, reliable, and measurable results. With my rich experience in AI and fullstack field built in my professional career, I'd like to provide innovative solutions that attribute success to crazy ideas and learn the ropes from it. ⚙️ Core Expertise 🤖 Artificial Intelligence / Machine Learning • Python, TensorFlow, PyTorch, Scikit-learn, XGBoost, Transformers • Model design: time-series forecasting, sentiment analysis, recommendation engines, fraud detection 🚀 Generative AI & LLM Solutions • GPT, Llama, Gemini, Claude, BERT • RAG pipelines, Fine-tuning, Prompt Engineering • Vector Databases: Pinecone, FAISS, Weaviate • Custom Chatbots, AI Agents, Conversational Apps 💻 Full-Stack Web Development • Frontend: React, Next.js, Vue, Angular, TypeScript, Tailwind CSS • Backend: FastAPI, Node.js, PHP, Flask, Go, REST & GraphQL APIs • Databases: MySQL, PostgreSQL, MongoDB, Supabase, Firebase 🗜 Automation & Integration • n8n, Make, Zapier, Vapi • Business workflow automation and AI integration 🔧 DevOps & Cloud • Docker, AWS, GCP, CI/CD (GitHub Actions), Microservices, Scalability Optimization 💡 What I Can Build for You ✅ Custom ML models for predictions and insights ✅ LLM-powered chatbots or internal assistants ✅ AI agents connected to live data sources ✅ RAG-based knowledge retrieval systems ✅ Automated workflows for repetitive business tasks ✅ Full-stack AI SaaS platforms (React + FastAPI/Node) ✅ End-to-end deployment on AWS/GCP 🌟 Why Clients Choose Me • Strong background in both AI research and software engineering • Clean, modular, and scalable code following best practices • Clear communication and rapid delivery • Proven track record of building production-ready AI systems If you’re looking for a reliable AI/Full-Stack engineer who delivers both technical excellence and business impact, let’s connect. I’ll help you go from concept → prototype → production smoothly and efficiently.

$35 hourly
Muhammad N.
- 5.0
- (22 jobs)
Ali Pur Chattah, PUNJAB
React.js
Redux
Flask
Node.js
Social Media Account Integration
HTML5
React
TypeScript
iOS
Android
JavaScript
GraphQL
MongoDB
React Native
Python

💎 Upwork Top-Rated Developer 💎 💰I'll give life to your ideas 💰 Full-stack software developer with 5 years of experience specializing in designing and developing custom websites and large-scale applications with a focus on client satisfaction. I am well equipped in following skills: - React - Material-UI - Materialize-CSS - React Native - Native Base - MongoDB - MySQL - Alchemy - Postgres SQL - Firebase - GraphQL - Python - Flask - Web Scrapping Server/Backend Development: I can write backend or your mobile with secure management. It will be restfull so you can use it anywhere for web and mobile. I will write secure backend in flask with graphql. We will use Attribute-based Access Control(ABAC) and Graph-based Access Control(GBAC) for authorization and prevent from malicious users. Web and Mobile App Development: Looking to build Hybrid App using React Native ? If yes, please feel free to connect with me as I have exemplary skills and experience in building highly scalable and robust cross platform mobile apps using react native and firebase. My Services & Expertise: - UI/UX improvements. - Bug fixing in existing app. - Design improvements. - API integration. - Camera, Audio/Video features. - Server API development to use it with app. - Cross Device support - Firebase integration. - Push Notifications. - Social Logins. - Location based app. - Maps integration. DEVELOPMENT PROCESS Collect & Analyze Client Requirements Wireframing App Flow Design Development Maintenance & Support Looking forward to hearing your idea and/or business needs and help you build it!
$45 hourly
Asmerom Estifanos E.
- 5.0
- (52 jobs)
Addis Ababa, AA
React.js
Microsoft PowerPoint
Desktop Application
Tailwind CSS
Git
RESTful API
ExpressJS
MongoDB
Node.js
React
Visual Basic
JavaScript
C++
AutoLISP
Autodesk AutoCAD

I help engineering firms, manufacturers, and businesses automate complex workflows through software development, CAD automation, and AI-powered systems. Unlike most developers, I bring 15+ years of professional Civil Engineering experience combined with deep software development expertise. I understand drawings, engineering standards, design workflows, technical documentation, and the operational realities behind engineering projects. My work focuses on delivering production-ready solutions that save time, reduce errors, and automate repetitive processes. What I Do CAD & Engineering Automation • AutoLISP / Visual LISP Development • AutoCAD & ZWCAD Customization • VBA Automation • Drawing Cleanup & Standardization • Block & Attribute Automation • Batch Processing Tools • CAD Standards Enforcement • Legacy Script Debugging & Modernization • Engineering Workflow Automation • AI-Assisted Drafting Systems Software Development • Python Development • JavaScript / TypeScript • React, Node.js, Express, MongoDB (MERN) • REST API Development & Integration • Desktop & Web Applications • Database Design • Data Processing & Automation • Business Process Automation • Custom Internal Tools • Performance Optimization Systems Programming • Compiler Development • Interpreter Development • Language Processing Tools • Parsing & Code Analysis • Algorithm Design & Optimization • Technical Problem Solving AI & Agentic Systems • Claude API Integration • OpenAI API Integration • Claude Code • OpenAI Codex • Custom MCP Servers • Custom Skills Development • Retrieval-Augmented Generation (RAG) • Agentic Workflows • n8n Automation • AI Application Modernization • Multi-Agent Systems Recent Project Types • AutoCAD automation tools that reduce hours of manual drafting work to minutes • Custom engineering workflow systems • Compiler and interpreter implementations • AI-powered engineering assistants • Document and file processing automation • Business workflow automation platforms • Custom web applications and internal tools • CAD standards enforcement systems • Data extraction and transformation pipelines • LLM-powered applications using modern AI stacks Why Clients Hire Me • 15+ years of real engineering experience • Strong software engineering fundamentals • Ability to understand complex technical domains quickly • Production-focused solutions, not demos • Clear communication and reliable delivery • Long-term maintainable code • Available 30+ hours per week
$40 hourly
Rommelie L.
- 5.0
- (23 jobs)
Manila, METRO MANILA
React.js
SQL
Amazon Web Services
CI/CD
Database
FastAPI
Next.js
LangChain
Node.js
React
Python
API Integration
Automation
Machine Learning
AI Agent Development
Large Language Model
Mobile App
SaaS Development
AI Development
Web Development
Full-Stack Development

👋 Hello, dear client. Thanks for visiting my profile. I’m an AI/ML Engineer and Full-Stack Developer who helps startups and businesses build AI-driven, scalable, and production-ready solutions. I combine deep knowledge in machine learning, GenAI, and web app development to deliver fast, reliable, and measurable results. With my rich experience in AI and fullstack field built in my professional career, I'd like to provide innovative solutions that attribute success to crazy ideas and learn the ropes from it. ⚙️ Core Expertise 🤖 Artificial Intelligence / Machine Learning • Python, TensorFlow, PyTorch, Scikit-learn, XGBoost, Transformers • Model design: time-series forecasting, sentiment analysis, recommendation engines, fraud detection 🚀 Generative AI & LLM Solutions • GPT, Llama, Gemini, Claude, BERT • RAG pipelines, Fine-tuning, Prompt Engineering • Vector Databases: Pinecone, FAISS, Weaviate • Custom Chatbots, AI Agents, Conversational Apps 💻 Full-Stack Web Development • Frontend: React, Next.js, Vue, Angular, TypeScript, Tailwind CSS • Backend: FastAPI, Node.js, PHP, Flask, Go, REST & GraphQL APIs • Databases: MySQL, PostgreSQL, MongoDB, Supabase, Firebase 🗜 Automation & Integration • n8n, Make, Zapier, Vapi • Business workflow automation and AI integration 🔧 DevOps & Cloud • Docker, AWS, GCP, CI/CD (GitHub Actions), Microservices, Scalability Optimization 💡 What I Can Build for You ✅ Custom ML models for predictions and insights ✅ LLM-powered chatbots or internal assistants ✅ AI agents connected to live data sources ✅ RAG-based knowledge retrieval systems ✅ Automated workflows for repetitive business tasks ✅ Full-stack AI SaaS platforms (React + FastAPI/Node) ✅ End-to-end deployment on AWS/GCP 🌟 Why Clients Choose Me • Strong background in both AI research and software engineering • Clean, modular, and scalable code following best practices • Clear communication and rapid delivery • Proven track record of building production-ready AI systems If you’re looking for a reliable AI/Full-Stack engineer who delivers both technical excellence and business impact, let’s connect. I’ll help you go from concept → prototype → production smoothly and efficiently.
$35 hourly
Muhammad H.
- 5.0
- (13 jobs)
Hyderabad, SD
React.js
Web Application
Stripe API
AI Marketplace
API Integration
Python
TypeScript
Next.js
AI Development
REST API
OpenAI API
Laravel
SQL
Custom Ecommerce Platform Development
MERN Stack
PHP
MongoDB
ExpressJS
NodeJS Framework
React
Full-Stack Development

Hi, 𝗜 𝗮𝗺 𝗛𝘂𝗻𝗮𝗶𝗻 𝗮 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸. I build AI-powered SaaS platforms, marketplaces, automation systems, and modern web/mobile applications for startups, founders, and growing businesses. 𝗙𝗿𝗼𝗺 𝗰𝗼𝗻𝗰𝗲𝗽𝘁 → 𝗽𝗿𝗼𝘁𝗼𝘁𝘆𝗽𝗲 → 𝗠𝗩𝗣 → 𝗹𝗮𝘂𝗻𝗰𝗵 → 𝗴𝗿𝗼𝘄𝘁𝗵, I focus on creating scalable products that solve real problems and deliver measurable results. I specialize in full-stack engineering, AI integrations, payment systems, custom Shopify development, API integrations, and long-term product maintenance. 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸: ✅𝗙𝗿𝗼𝗻𝘁-𝗲𝗻𝗱: ReactJS, NextJS, Redux, Redux Saga, React Query, MobX, VueJS, Vuex, Vuetify, NuxtJS, Quasar, Angular, Tailwind CSS, Ant Design, Material UI, Bootstrap, Styled Components, Emotion, SASS, LESS, CSS Grid, Flexbox ✅𝗕𝗮𝗰𝗸-𝗲𝗻𝗱: NodeJS, NestJS, Koa, ExpressJS, Socket IO, PassportJS, Sequelize, TypeORM, Laravel, Symfony, ASP NET Core, ASP NET MVC, SignalR, GraphQL ✅𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: PostgreSQL, MySQL, MongoDB, Redis, Firebase, GraphQL (resolvers/persisted queries) ✅𝗠𝗼𝗯𝗶𝗹𝗲 / 𝗖𝗿𝗼𝘀𝘀-𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺: React Native, Flutter (store submissions, OTA updates) ✅𝗤𝗔: Manual testing, Jest, Mocha, Cypress, API testing with Postman ✅𝗗𝗲𝘃𝗢𝗽𝘀: Docker, Nginx, Jenkins, GitHub Actions, Amazon ECS ✅𝗖𝗹𝗼𝘂𝗱: AWS, Google Cloud Platform, Microsoft Azure, DigitalOcean 𝗗𝗲𝘃𝗢𝗽𝘀 𝗖𝗹𝗼𝘂𝗱 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲: Docker, Nginx, Jenkins, Continuous Integration and Continuous Deployment, AWS Lambda Amplify EC2 ECS CloudFront, Google Cloud Platform, Microsoft Azure, DigitalOcean, Heroku, Webpack, Git Bitbucket GitHub GitLab, Swagger, Vercel, NPM, Yarn 𝗔𝗣𝗜𝘀 𝗮𝗻𝗱 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀: Stripe, PayPal, Elasticsearch, Twilio, OpenAI, GPT 4, GPT 4o 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 𝗮𝗻𝗱 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝗼𝗻: Scrum, Kanban, Jira, Trello, Asana, Slack, Monday, Notion, Confluence 𝗗𝗲𝘀𝗶𝗴𝗻 𝗮𝗻𝗱 𝗨𝗫: Figma, FigJam, Wireframing, Prototyping, UI Kits, Mobile First Design 𝗢𝘁𝗵𝗲𝗿: Single Page Applications SPA, Server Side Rendering SSR, Client Side Rendering CSR, SEO, CMS WordPress Headless, Web3, NFT, Payment Gateway Integration, Data Scraping, CRM Development, Cross Browser Compatibility, Quality Assurance QA, Microservices, Modular Architecture, Event Driven Architecture, CQRS, Hexagonal Architecture, Domain Driven Design DDD, API Gateway, Webhooks, Rate Limiting, Throttling, CORS, Content Security Policy CSP 𝗔𝘂𝘁𝗵 𝗮𝗻𝗱 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆: OAuth2, OpenID Connect, SAML, Single Sign On SSO, JSON Web Tokens JWT, Two Factor Authentication 2FA, Multi Factor Authentication MFA, Role Based Access Control RBAC, Attribute Based Access Control ABAC, Keycloak, Auth0, AWS Cognito, Web Application Firewall WAF, OWASP Top 10, Secrets Management, Vault 𝗖𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝗰𝗲: GDPR, HIPAA, SOC 2, PCI DSS, Audit Logs, Data Retention, PII Masking 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝗮𝗻𝗱 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝘆: SSR, SSG, ISR, Code Splitting, Lazy Loading, Incremental Builds, Edge Functions, CDN Caching, Image Optimization, Web Vitals, Prefetch, Preload 𝗥𝗲𝗮𝗹𝘁𝗶𝗺𝗲 𝗮𝗻𝗱 𝗠𝗲𝘀𝘀𝗮𝗴𝗶𝗻𝗴: WebSockets, Server Sent Events, WebRTC, Socket IO, Kafka, RabbitMQ, AWS SQS SNS, BullMQ, Redis Streams, Publish Subscribe 𝗗𝗲𝘃𝗢𝗽𝘀 𝗮𝗻𝗱 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 𝗮𝘀 𝗖𝗼𝗱𝗲: Kubernetes, Helm, Terraform, Pulumi, Ansible, ArgoCD, GitOps, Docker Compose, Nginx, Traefik, Full Stack Development If you're looking for a reliable developer who understands both engineering and product execution, let's build something great together. Regards, Hunain
$45 hourly
Abed A.
- 4.8
- (42 jobs)
Breda, NB
React.js
Ionic Framework
Smart Contract
Blockchain
Angular 2
Ethereum
Amazon MWS
API Development
SaaS
Vue.js
Angular
PHP
Laravel
JavaScript
React

Overview I’m Abed — Senior Full-Stack & AI Engineer (15+ years). I build and scale production-grade SaaS, marketplaces, and AI-powered e-commerce with clean architecture, measurable KPIs, and reliable delivery. What I deliver: 🛒 Multichannel commerce & ops: Amazon SP-API, Shopify, eBay, bol.com; listings/sync, orders/stock, pricing & rule engines, ERP/WMS/logistics/accounting integrations. 🤖 AI/LLM features: Product content from images, attribute mapping, RAG assistants, and cost-controlled AI microservices (OpenAI + self-hosted). 💳 FinTech & payments: KYC-ready APIs, reconciliation dashboards, audit trails, secure transaction flows. 🪙 Web3: NFT marketplaces & token utilities on Ethereum/Solana, wallet flows, IPFS pipelines. 🚀 SaaS/MVPs: Rapid PoCs → scalable releases with CI/CD, observability, documentation. Why hire me: 🧭 I own the architecture through launch and integrate the messy bits (legacy systems, 3rd-party APIs, data sync). 📈 Proven impact: SellEnvo (300+ customers), Mymesh (1,000+ buildings), B2BPay (3,000+ companies). 🗣️ Clear comms: short discovery → scoped milestones → weekly demos → on-time delivery. Selected projects 🛍️ SellEnvo — Co-Founder & Lead Architect. AI-powered multichannel SaaS; plug-and-play integrations; AI microservice shared with Listapro. (Laravel, Vue, AWS) — sellenvo.com 🧠 Listapro.ai — AI & Backend Dev. .NET Core backend for OpenAI + hosted LLMs; Shopify integration; Azure CI/CD. — listapro.ai 🏢 Mymesh — Senior Full-Stack. Smart-building dashboard + IoT sensors/control; microservices; SignalR realtime. — mymesh.nl 🗓️ Planbition — Team Lead. REST APIs, Ionic mobile app, worker planner, ML auto-planning, timesheets. — planbition.nl 💱 B2BPay — Backend & Integrations. FX/global payments APIs; OpenBank API; dashboards; DigitalOcean. — b2bpay.co 🌾 InventoryClub — Lead Blockchain. VNT token + smart contracts; trading wallet/app; MultiChain network. — inventoryclub.com 🪙 Sandwich.Network (Solana) — Full-Stack & Blockchain. Create/hold/trade NFTs; JS smart-contract integration. — sandwich.network ⭐ MyDC (Stellar) — Full-Stack & Payments. Wallet (buy/sell MYDC), payment gateway APIs, KYC/admin dashboard. — mydc.com.my 🎧 MIXO (Electron) — Cross-platform music library manager for DJs; audio library integrations. — mixo.dj 🎻 ProjectSAM Downloader (Electron + Vue) — Buy/download/manage orchestral libraries; payments; search. — projectsam.com 🚢 SoftSHIP (Ionic + Angular) — Shipping ops mobile app + web dashboard. — softship.com 🔐 Semieta (C#/.NET + Angular) — Visitor management & access control with door-lock/sensor integrations. — semieta.com 👨‍👩‍👧‍👦 IntelliPresence — Family privacy platform: IoT device link, telehealth appts, med reminders, video calls. — intellipresence.com 🥑 Avokado (Ionic + Laravel) — Marketplace, catalog, cart/checkout, order tracking, logistics integration. — avocadodelivers.app How I work 🧩 Architecture first (scalable, testable, documented) 📅 Weekly demos & transparent async comms 🔒 Security & privacy by design; your code/IP stays yours 👥 Solo or I can assemble a small senior team for extra velocity Skills: C#, .NET Core, .NET Framework, Delphi, PHP, Laravel, CodeIgniter, Node.js (ExpressJS, HAPI), JavaScript, Vue.js, Angular, React.js, HTML, CSS, TypeScript, Ionic, MySQL, SQL Server, PostgreSQL, MongoDB, ORM frameworks, Amazon SP API, Shopify, eBay, bol.com, crypto APIs, OpenAI APIs, e-commerce, banking, fintech, blockchain, crypto, NFT marketplaces, IoT, booking platforms, payment processing, ERP, CRM, scheduling systems, AI, LLM integration, LLaMA, OpenAI, AI-powered content generation, SEO optimization, automation, low-code (Mendix), cloud-native architecture, microservices, event-driven design, AWS, Azure, Docker, CI/CD pipelines, scalable architectures, performance optimization, and advanced UI/UX solutions.
$40 hourly
Kimera M.
- 5.0
- (4 jobs)
Kampala Central Division, C
React.js
Next.js
Tailwind CSS
Redux
GraphQL
React Bootstrap
RESTful API
React
TypeScript
Node.js
Material Design
Figma
CSS 3
Adobe XD
JavaScript
HTML5

Hi Thanks for stopping by👋 Online presence of any business is a major attribute to it's success. Every business should always make it's brand known to the general public which can easily translate into revenue. Do your needs fit into any of these questions listed below? Send me a message and we discuss about your project. 🤔Do you have an XD/Figma designs that you want to translate into reusable code using HTML, CSS, JavaScript or React Js? 🤔 Do you want a website for any business but you don't know where to start from? 🤔 Is your website not responsive enough to be used on all platforms and you want it made responsive? 🤔 Want to add a particular functionality to your website? 🤔Want to create a more engaging user experience from your brand than just displaying content on static web pages? 🤔Finding it hard as to come up with a "compelling" and a "engaging" designs and flow for your brand? 🤔 Have any API you want integrated to your designs? Name it.., I'm here to help you with anything regarding web design and development from design to trouble shooting all the errors aligned with your website to personalization of your website content and design with in a short period of time . With my expertise and knowledge, I got you covered with everything to do with web designing and development. For the past 5 years, I've been building web applications for all people from individuals to businesses owners who are interested in all sorts of functionalities like E-commerce, business profiles, custom systems with custom functionalities, Custom dashboards among others. I have a very efficient workflow and process while doing all this. I have expertise in developing beautiful, professional, reliable and affordable websites I'm proficient in the following: 🌟 Languages: ✔️ HTML ✔️ CSS ✔️ JavaScript ✔️ Typescript ✔️ Sass ✔️ Node JS 🌟 Frame Works ✔️ React Js ✔️ Express Js ✔️ Next Js 🌟 CSS Options ✔️ Tailwind CSS ✔️ Bootstrap ✔️ Material UI ✔️ Chakra UI ✔️ Shadcn ✔️ Antd ✔️ Styled Components ✔️ CSS modules 🌟 Design Tools ✔️ Figma ✔️ Adobe XD ✔️ Photoshop 🌟Version Control ✔️ Git ✔️ GitHub ✔️ GitLab ✔️ Azure DevOps 🌟 Other Technologies ✔️ Redux ✔️ React Router ✔️ Postman ✔️ Heroku ✔️ MongoDB ✔️ Linting Here's what to expect while working with me👇: ✔️ Pixel Perfect website designs and layout. ✔️ Fully responsive websites for both Mobile and Desktop Devices. ✔️ Fully Compatible websites with all browsers like Chrome, Firefox, Microsoft Edge, etc. ✔️ Clean, editable, reusable and tested code that can be changed from time to time. ✔️ Fully tested and finished web designs and code on real devices. ✔️ Expert help on trouble shooting errors aligned with website layouts in any browser. ✔️ Quick turn around and meeting deadlines no matter the size of the project. ✔️ Effective Communication and Attention to detail on every little aspect. ✔️ Full time Availability. Look at some of my work in relation to web design and development as listed in the projects section. When you hire me👨‍💼, here's what we would do: 1: First, click the invite button to invite me to your job📩 2: Once there, I'll jump on a phone call with you/video call📞 or exchange ideas with you about your needs. 3: We'll go over the details, colors🎨, assets, and the entire design/look of the template, design etc., until we have reached a middle ground So, if that sounds good, click the "invite" button, and we can start right away. Take a look at my website for more information kimeramoses.com Thanks for taking time to view my profile 🤝. Cheers🙋‍♂️, Kimera M.
$40 hourly
Sergio Francisco M.
- 0.0
- (1 job)
Colima, COLIMA
React.js
Web Application
Web Development
Ecommerce Website
Ecommerce
Ruby
HTML5
CSS 3
Ruby on Rails
Liquid
TypeScript
JavaScript
React

Throughout my career, I've had the privilege of working closely with a diverse range of clients, predominantly in the United States, since 2012. My natural ability to connect with people and understand their unique needs has been instrumental in executing and achieving complex project goals. I consider myself a friendly individual who enjoys the social aspect of my role as much as the technical, an attribute that has significantly contributed to my success in the field. Notably, I have played a pivotal role in the development and subsequent success of various software products, with a couple of them being acquired by prestigious companies like Dropbox. This achievement, I believe, attests to my commitment to excellence, innovation, and the capacity to drive projects from inception to completion. My creativity is another factor that sets me apart in the industry. Over the years, I've found myself drawn towards visual elements in software development, leading me to specialize in frontend projects. This creative streak has allowed me to innovate and develop visually stunning and user-friendly software solutions that meet and often exceed client expectations
$50 hourly
Kian M.
- 4.0
- (14 jobs)
Lexington, MO
React.js
HTML
React
Automation
n8n
Google Sheets Automation
Google Sheets
Google Apps Script
Node.js
TypeScript
JavaScript

Hi, I'm Kian! It's nice to meet you! I hate boring, repetitive work, and I'm sure you do too! Having to do the same thing over and over again is emotionally draining and hard. I'm a freelance developer and automation specialist with a passion for simplifying workflows and tasks, especially ones that integrate with Google Workspace or Google Cloud. Apps Script provides a quick, flexible, and powerful way to create automation that works with Google's services, as well as integrating with other platforms. I'm most proud of my ability to get up to speed very quickly. For a previous company, I learned their programming language of choice on-the-job, and was mentoring my coworkers within the first few weeks! Quick bit of humor: I loved taking apart electronics as a kid. I'd try to build robots, combine computers together to create more powerful ones, etc. I'd like to attribute my skills to an earlier experience, however. When I was 3 years old, I threw my parents' camera down the stairs. That moment started it all! :) Thanks for reading! Kian.
$5 hourly
Zahid H.
- 4.9
- (12 jobs)
Gazipur, DHAKA
React.js
Selling
Product Sourcing
TikTok
Shopify
Etsy
Web Development
Firebase
Node.js
MongoDB
Tailwind CSS
Bootstrap
CSS 3
HTML5
JavaScript
React
eBay Listing
Ecommerce Product Upload
Etsy Listing
Data Entry
Product Listings

Are you spending too much time listing products? Let me handle it. I can assist you. I'm a dedicated eCommerce virtual assistant specializing in product listings, bulk uploads, SEO-optimized product titles, and keyword-optimized descriptions across all major platforms. With 5+ years of hands-on experience. I work with - • Amazon • eBay • Shopify • Etsy • Poshmark • Depop • Walmart • WooCommerce • Tiktok • Temu • Tradesy • Any custom store Services include: — SEO product titles & keyword-rich descriptions — Single & variation listing creation — Bulk product upload & CSV/flat file management — Product data entry & catalog management — Competitor research & product keyword research — eBay listing optimization & Cassini search ranking — Shopify product upload & collection setup — Image upload, alt-text & attribute tagging — Copy-paste listings & detail-oriented data entry Why clients choose me: — 5+ years of eCommerce listing experience — Fast turnaround, no delays, no excuses — 100% accuracy & attention to detail — Affordable rates with professional results — Long-term VA partnerships welcome — Clear communication & quick responses Whether you have 10 products or 10,000 — I'm ready to start today. Send me a message/invite on your project, and let's grow your store together.
$20 hourly
Mai K.
- 5.0
- (6 jobs)
Ho Chi Minh City, SG
React.js
Research Methods
Academic Research
LoopBack
SCSS
Nuxt.js
Golang
PostgreSQL
Node.js
MongoDB
Redis
Tailwind CSS
Angular
React
Bootstrap
Vue.js
HTML
JavaScript

Full-stack Developer | Product-Minded Engineer | 5+ Years of Experience 📍 Ho Chi Minh City, Vietnam 🎯 About Me I am a product-driven full-stack developer specializing in scalable web applications and high-performance systems. My expertise spans across frontend and backend technologies, with a strong focus on user experience, system architecture, and business impact. I thrive in fast-paced environments, collaborating with cross-functional teams to deliver intuitive and efficient solutions. With a problem-solving mindset and a deep understanding of product development, I ensure that the software I build is not only technically sound but also business-aligned and user-friendly. 🔹 Core Competencies ✔ Product Mindset – Focused on building features that drive business growth and enhance user experience. ✔ Frontend Expertise – React.js, Next.js, Vue.js, Angular, TailwindCSS, React-admin. ✔ Backend Development – Golang, Node.js, Nest.js, Express.js, MongoDB, PostgreSQL. ✔ System Design – Experience in designing scalable architectures, caching strategies (Redis), and API integrations. ✔ Business-Oriented Engineering – Translating business needs into scalable and highly optimized technical solutions. ✔ Performance & Optimization – Implementing lazy loading, SSR, caching, and database optimization for speed and efficiency. ✔ Collaboration & Leadership – Working closely with Product Owners, Designers, and Business Analysts to ensure seamless execution. 🏆 Key Projects 🚀 Breezing.in (Event Management Platform) – Built seat map editors, customizable ticket designs, and a web builder for event organizers. 🛒 Data Central (Amazon Inventory System) – Developed real-time inventory tracking, analytics dashboards, and automation workflows. 🩺 Clincove (Healthcare Platform) – Created HIPAA-compliant clinical trial management tools with AI-assisted data verification. 🎟️ VNTIX (Ticketing System for VNPAY) – Built a B2B admin dashboard, React-admin components, and attribute-based access control (ABAC). 🚀 Why Work With Me? ✅ I think beyond the code – I understand the business impact of features and how they drive growth and revenue. ✅ I deliver results, not just software – Focused on performance, scalability, and user experience. ✅ I collaborate seamlessly – Strong communication and teamwork skills, ensuring smooth execution from idea to deployment. ✅ I solve real-world problems – Bringing innovation and technical excellence to every project.
$27 hourly
Harish K.
- 4.9
- (60 jobs)
Chandigarh, CHANDIGARH
React.js
Bubble.io
3D Logo Reveal
Illustration
3D Design
Front-End Development
React
Logo Design
UX & UI
WordPress
Elementor
WordPress e-Commerce
Divi
Web Development
Bootstrap
Responsive Design

Hello! I am an expert Full Stack Web Developer, including specializing in Wordpress, Laravel, ReactJs, Angular, Bubble.io. My job is to turn your awesome ideas into reality as quickly as possible while keeping the design perfect and the end product free of any errors. I offer 100% perfect WordPress websites with your desired features, functionality and design. I am currently ranked in the top 3% on Upwork for WordPress, PHP, HTML, CSS, MySQL, Javascript. Over the last 8 years, I have acquired extensive experience using a variety of frameworks (primarily WordPress) to craft beautiful frontend designs, along with providing custom plugins, themes, plugin customization, speed optimization, and minor/major bug fixes. I was previously the Lead Developer at ReskyuMe, developing their Android/iOS app and website along with their backend. I help people build their dream websites and solve problems they encounter with state-of-the-art solutions. Extremely high level of reliability and responsibility is my guarantee, which is evident from all of my reviews being rated 5 stars! My Skillset involves the following : ✅ Design and Develop a WordPress website from scratch ✅ Redesign existing WordPress websites ✅ Migrate website to WordPress from other CMS/Static websites ✅ Design WordPress website based on Figma, XD or PSD design ✅ Design using Page Builders like Elementor Builder, Divi Builder, Visual Composer, Beaver Builder, ✅ WPBakery, Oxygen, Fusion Builder, etc. ✅ Woo-commerce for eCommerce website ✅ Payment Integration, Cart process, Custom product design functionality ✅ Have Excellent knowledge about product features and attribute ✅ PSD to HTML with Bootstrap ✅ WordPress Custom Post Types, Custom Taxonomy, Custom fields (ACF), Forms, and Widgets ✅ Landing Page Design for Products, Apps, and Lead generation ✅ WordPress Plugin Development ✅ WordPress eLearning websites using any Popular plugin (both free and paid) ✅ Page speed Optimization and Performance Improvement ✅ Ongoing support and maintenance for your WordPress websites ✅ WordPress Membership sites ✅ Design and Develop Affiliate websites. I consider myself a person who follows modern web development practices and new technologies, a person who never stops learning, a person who is trustworthy, responsible, respects deadlines and knows that customer’s satisfaction is the key to success. Interested in my skills? Drop me a message and let's chat about your project! Looking forward to a communicative and successful working relationship.
$15 hourly
Janakkumar P.
- 4.9
- (65 jobs)
Idar, GUJARAT
React.js
SEO Plugin
CMS Development
WordPress Migration
Custom Content Management System
Web Design
MERN Stack
MySQL
MongoDB
Node.js
Python
AI Development
SaaS Development
Web Development
React
Next.js
Full-Stack Development
PHP
Laravel
WordPress Plugin
WordPress

🏆 Top Rated WordPress Expert 🎯 100% Job Success Score 💎 10+ Years of Expertise in Full Stack Development and Designing Backend skills: WordPress, PHP, Laravel, Codeigniter, AJAX, JQUERY, NextJS, ReactJS, NodeJS, E-commerce frameworks like WooCommerce. Frontend skills: HTML5, CSS3, JAVASCRIPT, Bootstrap, Tailwind CSS, Adobe Photoshop, Adobe Illustrator, Adobe XD, Figma, WebFlow ★★★★ MY AREAS OF EXPERTISE ★★★★ 👉Update PHP version, Update Wordpress, Theme, Plugins 👉 Responsive Web Design and Development 👉 Working with WordPress themes including Kadence, Astra Pro, Hello Elementor, Avada, Divi, Blocksy, Genesis, Electro, The7, Betheme, Enfold, Flatsome, Bridge, Salient, Newspaper, Porto, Woodmart, TheGem, Houzez, Prestige, and others 👉 Figma to Pixel-Perfect Elementor, Divi, Visual Composer, Oxygen Builder, WP Bakery, Bricksbuilder Expert 👉 GSAP, ScrollMagic, Tailwind CSS, Bootstrap 👉 Custom WordPress Theme, Gutenberg Block, WordPress Plugin 👉 Caching plugins like WP Rocket, Light speed, W3 Total Cache, WP Fastest Cache, Autoptimize etc 👉 Theme/Plugin Customization 👉HTML to WordPress 👉 WooCommerce Custom Product Import Facility 👉 WooCommerce Custom Quote Form Integration in Product Page 👉 Custom Product Archive Page using Elementor Pro 👉 Custom Product Page using Elementor Pro 👉 Built Dynamic website using JetEngine Plugin 👉 Custom Plugin Integration with Create, Update, Delete, Display Dynamic Products 👉 Batch Wise Product Import in WooCommerce 👉 WordPress Multisite / Network Setup 👉 Third Party API to Product Import in WooCommerce 👉 Fix Website Layout and Performance issues 👉 Scroll Magic and GSAP library integration 👉 Design and Develop WordPress website from scratch 👉 Roots Bedrock framework and the Sage theme development 👉 Redesign existing WordPress websites 👉 Migrate website to WordPress from other CMS/Static websites 👉 Design WordPress website based on Figma, XD or PSD design 👉 Design using Page Builders like Elementor Builder, Divi Builder, Visual Composer, WPBakery etc. 👉 Ajax Filter using JetSmartFilters, FacetWP, Search & Filter Pro, etc ( Custom Filter with Custom Attribute Widget ) 👉 Remove Malware and Update Wordpress 👉 Any Woo-commerce Bug Issue Fixing 👉 Payment Integration, Cart process, Custom product design functionality 👉 PSD to HTML with Bootstrap 👉 WordPress Custom Post Types, Custom Taxonomy, Custom fields (ACF), Forms and Widgets 👉 Landing Page Design for Products, Apps, and Lead generation 👉 Laravel, CodeIgniter API Integration 👉 17TRACK, Rapaport, IDEX Online , Xero Invoice API Integration 👉 Shopify Theme Development & Customization 👉 Eventin Plugin Integration 👉 Custom Sections, Templates & Blocks 👉 Custom Cart, Checkout & Subscription Features 👉 Klaviyo Integration 👉 E-commerce Website Development 👉 CMS Development 👉 Website Optimization 👉 Headless Wordpress Theme 👉Custom Thank You Page 👉WooCommerce to Shopify Store Migration 👉Shopify to WooCommerce Migration 👉 Webflow to WordPress Migration 👉 Wix to WordPress Migration 👉Claude website to WordPress 👉Lovable website to WordPress ★★★★ Webhosting and Linux Specialization: ★★★★ 👉 Web hosting providers: GoDaddy, HostGator, SiteGround, DigitalOcean, Cloudways, Bluehost, Hostinger, AWS EC2 Console, etc 👉 Migrations: with WordPress plugins, manually with SSH, Server to Server SYNC. 👉 SSL Certificates: with Lets Encrypt Free SSL, Wild Card SSL, Paid SSL DigiCert, GoDaddy, etc. 👉 Hosting Websites: with cPanel or VPS server, Dedicated server 👉 Control and manage Linux Servers using CLI commands. ★★★★ Keywords: ★★★★ WordPress Developer, WordPress Designer, WordPress Development, PHP, Laravel, CodeIgniter, Shopify, AJAX, jQuery, Next.js, React.js, Node.js, WooCommerce, Custom WordPress Theme Development, Elementor Expert, WordPress Website Customization Expert, Elementor Dynamic Template Expert, Elementor Pro Filter Ajax, PHP Developer, Laravel Developer, Shopify Developer, Divi Expert, WPBakery, Oxygen Builder, Bricks Builder, Gutenberg, FacetWP, JetSmartFilters, JetElements, JetEngine, Wordpress Plugin, Plugin Development, API Integration, WooCommerce Customization, WooCommerce Developer, WooCommerce Expert, PHP Expert, Laravel Expert, Shopify Expert, Urgent WordPress Site Migration, E-commerce Website Development, Wordpress security issue, Payment Gateway Integration, Landing Page Design, Website Optimization, Website Migration, Malware Removal, PSD to HTML, HTML to WordPress, Lovable to Wordpress, Claude to Wordpress, Custom Post Types, ACF, Web Hosting, ACF Expertise, Linux Server Management, cPanel, Fix Server Errors, VPS, AWS EC2, DigitalOcean, Cloudways, WooCommerce Digital Products,WooCommerce Support,HTML5, CSS3, JavaScript, Bootstrap, Tailwind CSS, Responsive Web Design, UI/UX Design, Adobe Photoshop, Adobe Illustrator, Adobe XD, Figma, Webflow
$30 hourly
Ishtiaq A.
- 5.0
- (46 jobs)
Karachi, SINDH
React.js
Software Development
PHP Script
Web Application
Redux
React Bootstrap
Node.js
MySQL
JavaScript
PHP
Laravel
Vue.js
React
Back-End Development
Front-End Development
Full-Stack Development

Senior Full Stack Developer | Top Rated Plus Developer | 300+ Projects Completed Are you seeking a Full Stack Developer, web expert, development partner, or business tech consultant? With 7+ years in full-stack and cross-platform development, I help founders and teams take products from concept to launch, web, mobile, and desktop, without the drama. I’ve delivered Full Stack Solutions, SaaS platforms, dashboards, marketplaces, and mobile apps used by real customers, shipping on time, documenting clearly, and keeping codebases clean for the next sprint. What you’ll get when we work together ✅Built-around-your-goals delivery: clear scope, measurable outcomes, short feedback loops. ✅Senior judgment: patterns that keep features stable, testable, and easy to extend. ✅Fast start: day-one environment setup, baseline CI, and a small first milestone. ✅Ongoing support: runbooks, monitoring, and pragmatic maintenance after launch. ✅Creative problem-solving: practical solutions when specs are evolving. Tech Stack ✅Front-end: TypeScript, React.js, Next.js, Vue.js, Nuxt.js, Angular, HTML5/CSS3, Tailwind, Ant Design, Material UI, Full Stack Development ✅Back-end: Node.js, Nest.js, Express.js, Koa, REST/GraphQL, Sequelize, TypeORM, PHP/Laravel, Symfony, .NET ✅Databases: PostgreSQL, MySQL, MongoDB, Redis, Firebase, GraphQL (resolvers/persisted queries) ✅Mobile / Cross-Platform: React Native, Flutter (store submissions, OTA updates) ✅QA: Manual testing, Jest, Mocha, Cypress, API testing with Postman ✅DevOps: Docker, Nginx, Jenkins, GitHub Actions, Amazon ECS ✅Cloud: AWS, Google Cloud Platform, Microsoft Azure, DigitalOcean Stop scrolling through endless profiles, you’ve found your build partner. Send a message to set up a quick consultation and outline your first milestone. Buzz words: Development Services: Product Development, Web Application Development, Website Development, Ecommerce Website Development, MVP Development, Application Development, Frontend Development, Backend Development, Full Stack Development, MERN Stack Development, Test Driven Development TDD, Agile Software Development, SaaS Development, Software Architecture and Design, API Integration, REST API Development, Third Party API Integration, ChatGPT API Integration, Website Performance Optimization, Progressive Web Apps PWA, Database Architecture, Database Design, Database Development, System Architecture, Responsive Design, Server Deployment Languages: TypeScript, JavaScript, PHP, C Sharp, XML, JSON, HTML5, CSS3 Frontend: ReactJS, NextJS, Redux, Redux Saga, React Query, MobX, VueJS, Vuex, Vuetify, NuxtJS, Quasar, Angular, Tailwind CSS, Ant Design, Material UI, Bootstrap, Styled Components, Emotion, SASS, LESS, CSS Grid, Flexbox Backend: NodeJS, NestJS, Koa, ExpressJS, Socket IO, PassportJS, Sequelize, TypeORM, Laravel, Symfony, ASP NET Core, ASP NET MVC, SignalR, GraphQL Databases: PostgreSQL, MySQL, MongoDB, Firebase, MariaDB, Redis Testing: Jest, Jasmine, Mocha, Cypress DevOps Cloud Infrastructure: Docker, Nginx, Jenkins, Continuous Integration and Continuous Deployment, AWS Lambda Amplify EC2 ECS CloudFront, Google Cloud Platform, Microsoft Azure, DigitalOcean, Heroku, Webpack, Git Bitbucket GitHub GitLab, Swagger, Vercel, NPM, Yarn APIs and Integrations: Stripe, PayPal, Elasticsearch, Twilio, OpenAI, GPT 4, GPT 4o Project Management and Collaboration: Agile, Scrum, Kanban, Jira, Trello, Asana, Slack, Monday, Notion, Confluence Design and UX: Figma, FigJam, Wireframing, Prototyping, UI Kits, Mobile First Design Other: Single Page Applications SPA, Server Side Rendering SSR, Client Side Rendering CSR, SEO, CMS WordPress Headless, Web3, NFT, Payment Gateway Integration, Data Scraping, CRM Development, Cross Browser Compatibility, Quality Assurance QA, Microservices, Modular Architecture, Event Driven Architecture, CQRS, Hexagonal Architecture, Domain Driven Design DDD, API Gateway, Webhooks, Rate Limiting, Throttling, CORS, Content Security Policy CSP Auth and Security: OAuth2, OpenID Connect, SAML, Single Sign On SSO, JSON Web Tokens JWT, Two Factor Authentication 2FA, Multi Factor Authentication MFA, Role Based Access Control RBAC, Attribute Based Access Control ABAC, Keycloak, Auth0, AWS Cognito, Web Application Firewall WAF, OWASP Top 10, Secrets Management, Vault Compliance: GDPR, HIPAA, SOC 2, PCI DSS, Audit Logs, Data Retention, PII Masking Performance and Delivery: SSR, SSG, ISR, Code Splitting, Lazy Loading, Incremental Builds, Edge Functions, CDN Caching, Image Optimization, Web Vitals, Prefetch, Preload Realtime and Messaging: WebSockets, Server Sent Events, WebRTC, Socket IO, Kafka, RabbitMQ, AWS SQS SNS, BullMQ, Redis Streams, Publish Subscribe DevOps and Infrastructure as Code: Kubernetes, Helm, Terraform, Pulumi, Ansible, ArgoCD, GitOps, Docker Compose, Nginx, Traefik, Full Stack Development
$35 hourly
Juan Sebastian F.
- 5.0
- (0 jobs)
Bogota, DC
React.js
Cloud Services
Microservice
API Integration
ASP.NET Web API
ASP.NET Core
CSS
HTML
Tailwind CSS
TypeScript
JavaScript
Node.js
Angular
ASP.NET
React

A passionate Angular engineer with 8+ years of experience building user-focused, scalable, and maintainable web applications using Angular and TypeScript. He also has gained invaluable experience working with startups, including developing, launching, and maintainging projects from scratch. .Additionally, he excels in leading and mentoring team developers, managing product lifecycle, and building both front-end and back-end components. Remarkable Angular Expertise -Component-Based Architecture and Two-Way Data Binding -Structural/Attribute Directives -TypeScript -Angular CLI -RxJS and NgRx -Built-in router module for navigation -Reactive Forms -Unit/End-to-End testing for QA -Backend APIs and third-party APIs -Bootstrap, Tailwind CSS, SCSS -Version Control: Github, Gitlab, Bitbucket -DevOps: Docker, Podman && AWS, Azure, Google Cloud, Vercel, Netlify -Project Management: Jira, Trello I have a keen eye for design and user experience, which I integrate into my development process to create engaging applications. My collaborative approach allows me to work seamlessly with cross-functional teams, ensuring that projects are completed on time and to specifications. Driven by a passion for innovation, I continuously seek to expand my skills and stay updated with the latest industry trends.
$50 hourly
Aldrin M.
- 5.0
- (2 jobs)
Campbelltown, NSW
React.js
Google Cloud Platform
AWS Development
AWS CloudFront
AWS Fargate
AWS Amplify
AWS Lambda
Salesforce
Python
Full-Stack Development
TypeScript
GraphQL
React Native
MongoDB
Node.js
React

I am a Senior Fullstack Engineer with deep experience building cloud-native, AI-powered, and enterprise-grade solutions across E-commerce, FinTech, Real Estate, and Automation. I specialise in highly scalable architectures, microservices, and cross-platform integrations using AWS, GCP, Commercetools, Salesforce Commerce Cloud, Vertex AI, and modern JavaScript/TypeScript frameworks. Full-Stack Engineering: JavaScript (ESNext), TypeScript (Advanced) React, Next.js (App Router), Tailwind, ShadCN/UI Node.js & Express, GraphQL, REST API design Python, FastAPI, data processing pipelines Monorepo architectures (Turborepo / Nx) Strong experience with PWA Kit, React SSR, and multi-domain theming. Cloud Platforms & DevOps: Amazon Web Services (AWS) Lambda (Node.js + TypeScript) API Gateway, SNS, SQS, S3 DynamoDB, RDS, Aurora ECS/Fargate, ECR CloudWatch, IAM, Secrets Manager Event-Driven Architectures Mailgun inbound email → Lambda document pipelines Google Cloud Platform (GCP) Cloud Run (Dockerised services) Cloud Functions Gen2 BigQuery (complex SQL transformations, MV refactoring) Vertex AI (Embeddings, RAG, LLMs) Workflows, Eventarc GCS Storage Transfer Pub/Sub CI/CD & Infra-as-Code Terraform, Pulumi GitHub Actions, Bitbucket Pipelines Infrastructure automation for multi-environment deployments Ecommerce Platforms: Commercetools Shopify Product queries, variant deduplication, faceted search Custom search microservices Line-item state workflows & refund APIs Import/export batch processing Multi-channel catalogue logic Salesforce Commerce Cloud (SFCC) PWA Kit integrations B2C Commerce data modelling Custom API middleware authentication GTM/GA4 enhanced e-commerce instrumentation Marketplacer, Pimly, Magento API/GraphQL Product syncing, inventory, pricing logic Custom attribute lookups & SKU-based queries AI, Automation & Data Engineering: Vertex AI + MongoDB + LangChain for RAG search Custom LLM Agents (property search, contract extraction, payment-claim matching) OpenAI GPT-4.1 / GPT-O / Fine-tuning pipelines MongoDB Atlas Vector Search (Semantic Search) Prefect Orchestration (Python & Node alternatives) Scheduled flows Distributed workers ETL pipelines ETL/ELT data modelling, streaming pipelines PDF/CVS/Doc parsing, document classification Databases & Storage: MongoDB (Atlas, vector embeddings) PostgreSQL / MySQL DynamoDB, Redis BigQuery S3/GCS object storage with signed URLs Architecture Experience: Event-driven microservices (SNS, Pub/Sub, queues) Multi-tenant SaaS platforms Real-time data pipelines (WebSockets) High-scale e-commerce search engines AI-powered document processing (payment claims, contracts) Secure API gateways, OAuth2, PKCE, JWT, API key strategies Additional Skills: Stripe (Payments, Webhooks) Solana & EVM blockchain token watchers Docker, Docker Compose Performance optimisation (server + frontend) Unit testing (Jest, Vitest) Email automation (Mailgun, SendGrid, Resend, MailerSend)
$52 hourly
Chris Z.
- 5.0
- (4 jobs)
Beijing, BEIJING
React.js
Neo4j
Chatbot Development
AI Audio Generation
AI Video Generation
Lead Generation
HighLevel
Email Automation
API Integration
CRM Automation
AI Agent Development
n8n
OpenAI Codex
Vercel
Supabase
AWS Fargate
React
JavaScript
Node.js
Retrieval Augmented Generation
Python

I am a Software Engineer at Bosch (Fortune 500). Previously at the Federal Reserve Bank of St. Louis, where I built RAG AI platforms used by 1000+ internal users, turning messy documents into structured data and insights. I was also a backend engineer at Siemens (Fortune 500), and MSAI at Carnegie Mellon University (number one in AI). At the Fed: • I indexed 1700+ documents and integrated 800k+ economic time series from the FRED and FRASER Database • Implemented hybrid RAG combines vector and keyword search (BM25&Trigrams) with Reciprocal Rank Fusion (RRF), • Designed data extraction pipelines to convert unstructured FOMC PDFs into structured defined schemas for querying, • Built multi-step workflows using LangChain/LangGraph, traceable and auditable actions with guardrails and citations, • Set up MCP server + API integrations, consistent access to structured data from internal systems with audit logs, • Delivered significant efficiency improvement, saving users up to 15 minutes per query. Currently at Bosch: • Developing Tessera, a conversation-driven data extraction system that converts unstructured documents into structured datasets via dynamic schema generation and iterative refinement At Siemens: • I developed Java backend services for a graph visualization platform, integrating with APIs and improving data processing throughput to support real-time visualization needs, matched performance of Neo4j on optimized workflows, • Built automated testing pipelines using GitHub Actions, enabling continuous integration for faster, more reliable releases, • Containerized services using Docker and deployed to AWS EKS, provisioning infrastructure with Terraform to ensure consistent, reproducible deployments At Institute of Automation, Chinese Academy of Sciences: • Deployed a computer vision traffic security system in Python and Pytorch supporting over 100k inferences per day through real-time data streams in a production environment. • Trained RepVGG, Yolo v5 models on 500k+ images for vehicle attribute detection, enhanced multi-task accuracy by 35% PUBLICATIONS Qufei Zhang, Yunshuang Wang, Gengsheng Li, Barry Cardiff, Pasika Ranaweera "Optimizing Federated Learning on Non-IID Data with Clustering and Model Sharing". EuCNC 2025 Jiahui Han, Qufei Zhang, Xiaoying Yang, and Jinyi Wang. "MIAE: A Mobile Application Recommendation Method Based on a Neural Tangent Kernel Model." IEEE BigData 2023 SKILLS Languages: Python, JavaScript, Java ML/AI: LangChain, LangGraph, RAG, RAGAS, Pinecone, OpenSearch, PyTorch DevOps: AWS, Docker, Kubernetes, Apprunner, Terraform, GitHub Actions, Supabase, Vercel Backend & Data: PostgreSQL, Kafka, MongoDB, Redis Frameworks: Flask, Node.js, Next.js, React, Django PS: The video on my page is for an AI lead follow-up app project I used to work on; you can get a sense of what I'm like, feel free to reach out if you wanna chat!
$45 hourly
Azmat R.
- 4.7
- (13 jobs)
Lahore, PUNJAB
React.js
Architecture
Software Architecture & Design
OpenAI API
LLM Prompt
AI Implementation
Database Design
Amazon S3
Vue.js
CRM Development
API Integration
React Native
SaaS Development
Full-Stack Development
REST API
MySQL
Node.js
React
MERN Stack
PHP
Laravel

I build ERP, SaaS, and CRM systems that businesses actually run their operations on — not demos, not prototypes. 12+ years, 2,600+ hours on Upwork, Top Rated. Most "full stack developers" write CRUD screens and call it done. I design the data model, the workflow state machine, and the access control underneath a system before I write a line of UI — because that's what decides whether your ERP still works cleanly two years and forty feature requests later, or needs a rewrite. Increasingly, that means wiring AI directly into the systems I build — not as a chatbot bolted on the side, but as a structured layer that reasons over your actual data: smart search across your records, AI-assisted reporting, automated document/email processing, and agent-style workflows that act on your CRM or ERP data instead of just answering questions about it. What I've shipped: - Enterprise ERP modules covering HR, finance, and operations workflows - CRM and campaign systems redesigned around proper lifecycle states — pending, approved, queued — instead of fragile ad-hoc logic that breaks under edge cases - AI/LLM integration into existing backends — structured data extraction, RAG-based search over business records, automated workflows triggered by AI-evaluated conditions - Healthcare MIS systems handling patient and clinic workflows - S3-integrated document/media systems with pre-signed URL handling for secure, scalable file delivery - LMS platforms with student portals, course management, and role-based access - Mobile apps shipped to Android & iOS (React Native, Flutter) Core stack: Laravel (PHP), MERN (MongoDB, Express, React, Node), Vue.js, MySQL, REST APIs, AWS (S3 and related services), OpenAI/Claude API integration, React Native, Flutter. How I work: - I plan the schema and API contract before development starts, not during it - I track time and share milestone updates proactively — non-negotiable on every engagement now - I write code meant to be maintained by someone else later, not just shipped to pass review - I flag problems before you've paid for them, not after If you need someone who treats your ERP, CRM, or SaaS product like infrastructure with long-term consequences — and wants AI to actually do something useful inside it, not just sit on top as a demo feature — let's talk about what you're building.
$50 hourly
Christian R.
- 5.0
- (3 jobs)
Tysons, VA
React.js
React
LLM Prompt Engineering
Python
TypeScript
Ionic Framework
HTML
CSS
ASP.NET
.NET Framework
Angular 6
ASP.NET MVC
SQL
Apache Cordova
JavaScript
C#

Hi, I'm Christian! It is very nice to meet you. I am a Creative Software Architect based in Virginia. I have over 15+ years of Excellence: Journeying from a Junior Software Engineer to a Senior Software Architect. I've mastered a myriad of technical skills, leading large-scale projects and pushing the boundaries in software design. With over 15 years of experience, I've cultivated a unique skill set in system (software), project and UI/UX design. Specializing in sophisticated software architecture, my expertise is a beacon for Fortune 500 companies (i.e. Werner Enterprise, DELL, Microsoft, etc.) and innovative startups seeking groundbreaking solutions. At the forefront of digital transformation, I've led initiatives like QuickDocta, a transformative health platform, showcasing my ability to elevate your projects with visionary design, and strategic prowess. Let's team up to bring unparalleled architectural acumen to your most ambitious tech endeavors.
$56 hourly
Yan O.
- 5.0
- (6 jobs)
Kiev, KYIV CITY
React.js
Flutter
Unity
ECMAScript 6
API Development
API Integration
JavaScript
Docker
Golang
CSS 3
HTML5
MongoDB
React
Node.js
jQuery
C#

Hello World! My name is Yan and I am React.js/Node.js developer. I consider my self rather experienced both with front-end and back-end. I really like to know how and why everything works (or not..). The list of skills may look like: HTML, CSS, JAVASCRIPT, C#, XML, XSL, REACT.JS, NODE.JS, FLUTTER, ADOBE PHOTOSHOP, BLENDER, GIMP, INKSCAPE, UNITY3D. Opened for any reasonable project and ready to invoke all my skills for the best results
$90 hourly
Stefano M.
- 5.0
- (2 jobs)
Verona, VR
React.js
Ruby on Rails
Vue.js
ExpressJS
React
Node.js
Shopify
Ruby
Golang
API
JavaScript
Spree
React Native
Python
Flutter
Technical Project Management

Nice to meet you! I am a CTO as a Service and entrepreneur from Italy. I started my development career in 2006 and since then I've worked with many interesting technologies, such Node, Ruby, Python and Go. As a CTO as a service, I can help your Company in a wide range of manners: - Early project stage: Helping the project owner with a strategy Defining the product roadmap (short and long term) Team hiring and training Data analysis Database design Defining application architecture Designing infrastructure architecture Choosing the right programming language and technical stack Building a PoC project Project setup and startup - During development: Team management (or your offshore team) Tasks estimation Tasks prioritization Applying agile practices Code quality review Quality assurance and testing processes Choosing a scaling strategy Choosing when and how to refactor the code Minimizing the technical debt - Project release: Assuring the quality of the final product Writing technical documentation Short and long term maintenance strategy Planning the quality assurance and testing processes Choosing a scaling strategy Defining the optimization strategy Choosing when and how to refactor the code During last 15+ years, I built every kind of web application, from monoliths to micro services to IoT related boards to every kind of client's ideas. I have dealt with: - platforms that optimize working flows - ecommerce (Spree) - quoting applications - employees evaluation and training - IoT dashboards - booking engines - mobile applications - business intelligence dashboards - ticketing systems - digital platforms for link building and digital pr - elearning tools - digital payments Currently, I'm helping clients all over the world to startup their challenging projects. Why trusting me? Because I'm a developer first, a highly skilled backend CTO and an entrepreneur. Hire me for your next big project. Stefano Mancini
$65 hourly
Yoel D.
- 4.7
- (16 jobs)
Miami, FL
React.js
React
Vue.js
ECMAScript
Redux
Laravel
Cryptocurrency
React Native
C++
ASP.NET Web API
ASP.NET MVC
VB.NET
MySQL Programming
Oracle PLSQL
SQL
ADO.NET
Web API
.NET Core
.NET Framework
C#
JavaScript
TypeScript
Angular 6

Bring me your problems! I have the solutions to A-Z problems. I am not limited to a single stack, as my development career has needed me to be a jack-of-all-trades, being engaged in several cutting-edge technologies. Here's what I worked on and I am working with: - Client-Side Programming: o Frameworks: Angular o UI Frameworks: BootStrap o HTML5, CSS3, jQuery, JavaScript, TypeScript - Server-Side Programming: o C#: ASP.NET, ASP.NET MVC, .NETCORE, .NET WebApi - Mobile Programming: o C/C++/C# - Database o Relational: MySQL, SQLServer, Oracle PLSql - Server: o Apache o Nginx - Architectures: o MVW (MVC, MVVM) - Version Control: o Github, Accurev I know what your project means to you and to your business. I would be willing to offer you a help with my experience as a web and mobile developer on different enterprise level applications. I am well-versed in all phases of the software development life cycle, including source control, and code review. I used to be a hard(smart) worker, a collaborative team player and a multi-tasker, being responsible and capable of prioritizing and executing tasks in a high-pressure environment, which has made me successful on my career. Good communications skill, of course, is the most important one in me, as I used to work in a scrum/agile development environment for most of my projects. I am responsible and capable of to prioritize and execute tasks in a high-pressure environment. Wouldn't it be worthwhile to have me for your real life projects?
$35 hourly
Rami A.
- 5.0
- (22 jobs)
Nablus, WEST BANK
React.js
Next.js
Front-End Development
SVG
Tailwind CSS
CSS
JavaScript
Sketch
Landing Page
Web Development
Web Design
Figma
Page Speed Optimization
Webflow
SEO Performance
React

I am a Senior Front-End Engineer specializing in TypeScript-first, modern front-end systems. I have 4+ years of production experience with React and Astro, 2+ years with Next.js, extensive hands-on work with the TanStack ecosystem (Query, Router, Start), and 5+ years of professional Webflow experience. My focus is on building scalable, maintainable, and high-performance front-end architectures, not just components, but systems that support real products over time. Core Expertise - React, Next.js, Astro (SSR, SSG, hybrid rendering, islands architecture) - TypeScript-first development - TanStack Query, Router, Start - Component architecture & design systems - TailwindCSS, modern CSS, semantic HTML - Framer Motion for refined UI interactions - Webflow for production-ready marketing sites and rapid delivery Performance, SEO & Quality - Measurable improvements to Core Web Vitals - SEO-friendly rendering and bundle optimization - Accessibility-aware development (WCAG-aligned) - Refactoring and modernization of legacy front ends Product UI/UX, Figma & Sketch - I design complete product UI/UX interfaces in Figma, including: - Application layouts and UX flows - Interaction design and user journeys - Clickable prototypes for full web applications - Design systems and developer-ready components My focus is on product usability and interface clarity, not branding or logo design. How I Work - Clear communication and strong ownership - System-level thinking over short-term fixes - Emphasis on long-term maintainability and performance If you need a senior front-end engineer with strong product UI/UX capability, who can also deliver quickly using Webflow when appropriate, I can help you ship clean, scalable, and effective interfaces.
$80 hourly
Adrian M.
- 5.0
- (2 jobs)
Perth, WA
React.js
AI Chatbot
ChatGPT API Integration
LLM Prompt Engineering
AI Development
Node.js
Django
Oracle PLSQL
Azure DevOps
Apache Tomcat
JavaScript
React
Python
Java
C#
SQL

Looking for an experienced software engineer who has extensive industry experience, wide ranging technical skills, great communication skills, can work independently, and has an ability to really 'get' the big vision of what you want to achieve? Need someone who can fine-tune your new AI app or figure out why it's not working? UNDERSTANDING I don't just blindly focus on the technical aspects of the project. I will make sure that I understand exactly what your business wants and how the project will be used in the real world, so I can deliver something that is intuitive for users and exceeds your expectations. CREATIVITY I love coming up with brilliant and creative ideas for how your product could be improved or tweaked. If you're looking for a passive, mindless worker then you should hire someone else. I will frequently inject fresh new ideas into the discussion, and challenge your thinking. QUALITY What I can offer that you probably won't find from other freelancers here is a very high level of production build quality and testing. Instead of delivering the minimum to you, I excel in delivering a high-quality product that is not an unstable or incomplete prototype, but a production-ready product that is complete, user-friendly, intuitive, and free of bugs. EXPERIENCE I have 15+ years of experience as a software developer, building both front-end and back-end software applications, specialising in Java, JavaScript, React, Python, Django, C#, and SQL. I can integrate with LLMs such as ChatGPT to build AI features. I'm confident solving complex problems, designing new architectures, building DevOps pipelines, integrating 3rd party APIs, designing relational databases. I have exceptional skills in the area of problem-solving and trouble-shooting. COMMUNICATION What also sets me apart from most developers are my fantastic communication and people skills, making me a breeze to work with, and allowing you to understand the big picture even if you’re not a technical person. INDEPENDENCE I have and an ability to work independently to make technical decisions and solve problems, meaning you don't have to waste time micro-managing me. But it's up to you how much you delegate. I will find out from you which decisions you want to be a part of, and which ones you are happy to entrust to me. You always have the final say. WHAT TO EXPECT If I start a project with you, here is what to expect: 1. I will have a lengthy conversation with you to make sure I fully understand all of your expectations and requirements. Based on this, we will agree on individual delivery milestones. 3. I will write up the technical design for each milestone, along with an estimate of development time, and a plan for how to quality test it once it's complete. 4. I will work on each milestone and deliver a preview of it to you for feedback and minor tweaks. 5. I will then begin a round of quality testing to find bugs and ensure the product is stable and complete. 6. We will discuss and feedback and also bugs found during testing, and negotiate what can be realistically changed or fixed within the timeframe and budget of the project. 7. I will apply any fixes or minor tweaks that we agreed upon. 8. I will then deliver the final version of the software to you, complete with documentation for how to set up the development environment, how to deploy the software, and how to use it. Don’t wait, get in touch now and we can plan our first project together!
$35 hourly
Sarwaichraza Q.
- 5.0
- (8 jobs)
Karachi, SD
React.js
PostgreSQL
Generative AI
OpenAI API
SaaS Development
Artificial Intelligence
API Development
.NET Core
Software Architecture & Design
Python
TypeScript
Software Design
Node.js
Web Development
React
C#

I’m a Senior Full-Stack Software Engineer with 7+ years of hands-on experience building production-grade SaaS platforms, scalable APIs, and modern web applications. I specialize in ASP NET Core, Node JS, React, TypeScript, and PostgreSQL, with a strong focus on clean architecture and long-term scalability. Over the past few years, I have architected and built complex, AI-powered SaaS products end-to-end, including Ommo.ai, a logistics and freight automation platform. I designed its complete backend architecture, multi-tenant database schema, secure integration layer, and real-time systems — taking the product from idea to production. WHAT I DO BEST Full-stack development with a backend-first, scalability-focused approach SaaS architecture and system design Microservices and secure API development AI and automation integrations Real-time systems using WebSockets and SignalR Cloud-ready, production-grade code CORE TECHNOLOGIES Backend ASP NET Core Node JS C Sharp, TypeScript, JavaScript Authentication, authorization, JWT, role-based access control Frontend React JS using hooks, context, and Redux TypeScript with modern component architecture Scalable and maintainable UI state management Databases PostgreSQL SQL Server MongoDB Multi-tenant database design and performance optimization AI AND AUTOMATION AI calling and conversational systems Speech-to-text and text-to-speech integrations AI workflow orchestration and automation Cloud and DevOps Docker and containerized services AWS and Google Cloud deployments CI CD friendly architectures REAL PRODUCT EXPERIENCE Unlike many profiles, I have architected complete platforms, not just isolated features. I’ve built secure third-party integrations, designed systems meant to scale under real production load, and worked directly with founders and stakeholders. I understand business constraints, technical debt, and delivery pressure because I’ve owned real products. HOW I WORK Clean, maintainable, production-ready code Clear communication and ownership mindset Architecture decisions explained in simple terms Long-term solutions instead of short-term hacks Whether you’re building a new SaaS product, scaling an existing system, adding AI automation, or fixing architecture and performance issues, I bring clarity, structure, and execution. Let’s build something that actually works — and scales.
$55 hourly
Luna R.
- 4.6
- (42 jobs)
Daly City, CA
React.js
Shopify
TypeScript
AI Chatbot
OpenAI Inc.
HTML
React
Web Development
Search Engine Optimization
Elementor
Next.js
JavaScript
Tailwind CSS
Website
CSS
WordPress

I’m a front-end focused full-stack developer who helps startups turn ideas into fast, scalable products. My specialty is building clean, modern interfaces with React, Next.js, Tailwind, and TypeScript. So your product doesn’t just work, it feels great to use. Whether you need a polished SaaS dashboard, an AI-powered web app, or a custom Shopify storefront, I can own the front end (and handle the back end when needed) to get your product in front of users quickly. Clear communication, thoughtful code, and a focus on real results are what I bring to every project. Let’s chat about how I can help bring your idea to life. Tech I use most: React | Next.js | TypeScript | Tailwind CSS | Node.js | Shopify | APIs | AI integrations | Supabase
$95 hourly
Amar K.
- 5.0
- (32 jobs)
Bengaluru, KA
React.js
Java
LangChain
Django
Retrieval Augmented Generation
RESTful API
Amazon Web Services
Large Language Model
AI Chatbot
OpenAI API
Claude
Docker
Google Cloud Platform
Apache Airflow
React
Chatbot
Python

Expert-Vetted AI & Full-Stack Engineer | 100% Job Success | 30+ Projects | $170K+ Earned Past Experience : Goldman Sachs, Morgan Stanley, KPMG, Oracle & Others I help startups and enterprises ship AI products and the backend systems behind them — from RAG chatbots and LLM integrations to scalable APIs, data pipelines, and production deployments. 10+ years building software. 30+ Upwork projects, all 5-star rated. Expert-Vetted (top 1%). One engineer who can own the problem from architecture to live product — clear communication, on-time delivery, code that scales. WHAT I BUILD AI & LLM • RAG chatbots and knowledge assistants over PDFs, docs, wikis, Notion, and internal APIs • LLM integration with OpenAI (GPT-4o, GPT-4), Anthropic Claude, and Google Gemini • AI agents with tool use — CRM, email, Slack, webhooks — plus guardrails and human approval • Streaming chat UIs with conversation memory, citations, and admin dashboards • LangChain, LlamaIndex, vector search (Pinecone, pgvector, Chroma, Weaviate, Qdrant) Backend & APIs • REST and GraphQL APIs in Python (FastAPI, Django, Flask), Node.js, and Java/Spring Boot • Microservices, event-driven architecture, authentication, and third-party integrations • PostgreSQL, Redis, MongoDB — schema design, optimization, migrations • Data pipelines with Kafka, Spark, and Airflow for analytics and ETL Frontend & Cloud • React, TypeScript, Next.js, Angular — SaaS dashboards and polished product UIs • AWS, GCP, Azure — Docker, CI/CD, monitoring, production hardening WHY CLIENTS HIRE ME Most AI projects break at the seams — weak APIs, messy data ingestion, no real UI, nothing deployed. I deliver the full path: data in → embeddings & retrieval → LLM → API → frontend → cloud.
$100 hourly
Suat K.
- 4.6
- (11 jobs)
Istanbul, ISTANBUL
React.js
Blockchain
Solidity
web3.js
.NET Core
Generative AI
Ionic Framework
React Native
Salesforce
Swift
AI Development
React
PHP
Vue.js
TypeScript
JavaScript
Node.js
Kotlin
Angular

🏆 Expert-Vetted 🎯%100 Job Succession ⚙️10+ years of extensive experience in all phases of the software development life cycle with unlimited coding skills. Excellent interpersonal skills and a specialty in translating technical concepts to non-technical clients. A strong ability to work independently and proactively, finishing projects on time and within budget. 🧠A great problem solver I have experience in the following technologies : ✅Angular ✅React ✅Vue ✅Node.js ✅Parse Server (Open Source Contributor) ✅PHP ✅Swift ✅Kotlin ✅Ionic ✅React Native ✅Solidity ✅Candy Machine (Metaplex-Solana) I am always seeking long-lasting relationships, if you do also let's work together! 🤝🏻
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