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

$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 deliver real client work inside Claude Code and Cowork: agentic, repo-aware development and automated file and task workflows that run in production, not just demos. Anthropic's stack (Claude Code, Cowork, Claude API, Skills, MCP) is where I do most of my building, backed by full-stack and CAD automation experience. Claude Code & Cowork: Repo-aware development in Claude Code (features, refactors, tests, multi-step automation that fits your review process) and Cowork for automating file and task workflows end to end. I also work fluently in OpenAI Codex and pick the right agent per task. AI Integration: API integration, custom Skills, custom MCP servers, RAG systems, and agentic workflows (n8n, LangChain-style). I also migrate existing LLM apps onto modern model stacks. CAD Automation: AutoLISP/LISP, VBA, AutoCAD/ZWCAD. Drawing cleanup, batch processing, block/attribute logic, standards enforcement, and legacy-script debugging. Increasingly AI-assisted, including Skills that lock AI output to your house drafting standards. Full-Stack: MERN (React, Node, Express, MongoDB), Python, REST APIs, and data pipeline automation. I work 30+ hrs/week and communicate clearly at every stage. Need agentic development in Claude Code, a Cowork automation, a custom Skill or MCP server, or CAD automation? I'll deliver something that works.
$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!
$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.

$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 deliver real client work inside Claude Code and Cowork: agentic, repo-aware development and automated file and task workflows that run in production, not just demos. Anthropic's stack (Claude Code, Cowork, Claude API, Skills, MCP) is where I do most of my building, backed by full-stack and CAD automation experience. Claude Code & Cowork: Repo-aware development in Claude Code (features, refactors, tests, multi-step automation that fits your review process) and Cowork for automating file and task workflows end to end. I also work fluently in OpenAI Codex and pick the right agent per task. AI Integration: API integration, custom Skills, custom MCP servers, RAG systems, and agentic workflows (n8n, LangChain-style). I also migrate existing LLM apps onto modern model stacks. CAD Automation: AutoLISP/LISP, VBA, AutoCAD/ZWCAD. Drawing cleanup, batch processing, block/attribute logic, standards enforcement, and legacy-script debugging. Increasingly AI-assisted, including Skills that lock AI output to your house drafting standards. Full-Stack: MERN (React, Node, Express, MongoDB), Python, REST APIs, and data pipeline automation. I work 30+ hrs/week and communicate clearly at every stage. Need agentic development in Claude Code, a Cowork automation, a custom Skill or MCP server, or CAD automation? I'll deliver something that works.
$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!
$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.
$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
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.
$30 hourly
Ishtiaq A.
- 5.0
- (45 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)
$32 hourly
Chris Z.
- 5.0
- (3 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!
$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
$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
Lu 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
$100 hourly
Amar K.
- 5.0
- (32 jobs)
Bengaluru, KA
React.js
Automation
Claude
Large Language Model
Amazon
Data Engineering
Docker
Google Cloud Platform
Apache Airflow
React
Chatbot
SQL
Java
PySpark
Python

I help startups and enterprises build AI-powered products, modern data platforms, and scalable cloud solutions. I’ve delivered 30+ successful projects with a 100% Job Success score and $100K+ in earnings. 🎖️ 10+ Years Experience | 30+ Projects — All 5-star Rated 🏆 | Expert-Vetted | 100% Job Success I’ve spent over a decade building full-stack applications, data pipelines, and AI integrations for teams that need both solid engineering and clear communication. What I bring to your project I focus on delivery: clear scope, on-time execution, and code that’s maintainable and scalable. My work spans frontend (React, TypeScript, Angular), backend (Java/Spring Boot, Python/Django/Flask, Node.js), and cloud (AWS, GCP, Azure). I’ve designed and built microservices, real-time analytics, and ETL pipelines that handle high volume with Spark, Kafka, and Airflow, and I integrate LLMs and RAG (LangChain, LlamaIndex, vector DBs) when the product needs AI. Why clients keep coming back I’ve delivered 30+ projects with a 100% job success rate and top ratings. Clients get a single point of contact who can own the full stack—UI, API, data, and deployment—so you spend less time coordinating and more time shipping. Enterprise and regulated environments I’ve worked with Fortune 500 and regulated industries (e.g. Morgan Stanley, Goldman Sachs, KPMG, Oracle Cerner) on portfolio platforms, trading infrastructure, data governance, and healthcare analytics. I’m comfortable with requirements, compliance, and working in large, structured teams. If you need a full-stack or data engineer who can own the technical side and communicate clearly, I’d be glad to discuss your project and how I can help.
$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! 🤝🏻
$45 hourly
Dmitry S.
- 5.0
- (42 jobs)
Banska Bystrica, BANSKOBYSTRICKÝ
React.js
Flutter
Web API
Entity Framework
PostgreSQL
MySQL
Angular
React
Cryptocurrency
Software QA
ASP.NET Web API
.NET Framework
JavaScript
C#
SQL
MongoDB

𝗜 𝗱𝗿𝗶𝘃𝗲 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗚𝗥𝗢𝗪𝗧𝗛 𝗯𝘆 𝗽𝗿𝗼𝘃𝗶𝗱𝗶𝗻𝗴 𝗣𝗥𝗢𝗙𝗘𝗦𝗦𝗜𝗢𝗡𝗔𝗟 𝘄𝗲𝗯 𝗗𝗘𝗦𝗜𝗚𝗡 𝗮𝗻𝗱 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧 𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 ✨ Full-stack software development — SQL / MongoDB / .NET / C# / Node.js / TypeScript ✨ Web & mobile applications — React / Angular / Flutter ✨ UX/UI design — Figma / Photoshop / Illustrator ✨ Software architecture — ERD / UML / Scaling / Security 𝗖𝗼𝗻𝘁𝗮𝗰𝘁 𝗺𝗲 𝘁𝗼 𝘀𝘁𝗮𝗿𝘁 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝗿𝗶𝗴𝗵𝘁 𝗮𝘄𝗮𝘆! 𝗛𝗼𝘄 𝗜 𝘄𝗼𝗿𝗸 𝘁𝗼 𝘁𝘂𝗿𝗻 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝘃𝗶𝘀𝗶𝗼𝗻 𝗶𝗻𝘁𝗼 𝗿𝗲𝗮𝗹𝗶𝘁𝘆 1️⃣ Consultation — Discuss the project idea, figure out requirements, set up budget and timeline. 2️⃣ UX/UI design — Prepare middle and high fidelity design mockups and prototypes. 3️⃣ Architecture — Introduce ERD and UML diagrams to have a single point of synchronization. 4️⃣ Development and testing — Implement the project utilizing Agile methodology with 1 or 2 week sprints and incremental delivery after each iteration. 5️⃣ Deployment — Deploy the whole solution into production environment. 6️⃣ Support — Provide post-delivery support to ensure product effectiveness. 𝗪𝗵𝗮𝘁 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗜 𝗵𝗮𝘃𝗲 ➡ Databases & warehouses — MS SQL Server / MySQL / PostgreSQL / MongoDB / Azure Storage. ➡ Backend — .NET / C# / ASP.NET / Node.js / REST API. ➡ Frontend — React / Angular / Next.js / TypeScript. ➡ UX/UI design — Figma / Photoshop / Illustrator. ➡ Payment gates — Stripe / PayPal / Vantiv / etc. ➡ Integrations — Intuit / QuickBooks / Xero / OpenAI / SendGrid / Postmark. 𝗖𝗼𝗻𝘁𝗮𝗰𝘁 𝗺𝗲 𝘁𝗼 𝘀𝘁𝗮𝗿𝘁 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝗿𝗶𝗴𝗵𝘁 𝗮𝘄𝗮𝘆!
$45 hourly
Karlen M.
- 5.0
- (8 jobs)
Yerevan, YEREVAN
React.js
Cloud Architecture
MySQL
Next.js
Node.js
React Native
TypeScript
Mobile App
Software Development
WordPress e-Commerce
Squarespace
AWS Amplify
PostgreSQL
React
Serverless Computing
Shopify
Web Development
JavaScript
Machine Learning
Python

Software Engineer, a Ph.D. candidate in computer science For the past 9 years, I have been working as a software engineer and have hands-on experience with different kinds tech stacks and modern architectures. Tech stack: • Cloud Platforms - AWS, GCP • Databases - Postgesql, DynamoDB, Elastic Search, Redis, Mongo DB, AWS Cloudsearch, Firbase • Languages - NodeJS, Python, Java, C++ • UI - ReactJS, Redux, Redux-Saga, Redux-Thunk, Svelte • Datalake - AWS Quiqsight, AWS Athena, AWS Glue, AWS S3 Skilled in Object-Oriented Programming (OOP), JavaScript, SQL, Java, C++ & Machine Learning. Strong engineering professional who graduated from the Institute for Informatics and Automation Problems. I continuously develop my knowledge and skills in new technologies, keep up with the latest versions and methods. Having genuine passion and interest for programming and software development, I successfully solve different challenges and problems. Contact me and let’s discuss more details and our possible further cooperation! Can work in preferred timezone. Interested in Full Time and Long Term projects.
$36 hourly
Tadas V.
- 5.0
- (7 jobs)
Vilnius, VILNIUS
React.js
Smart Contract
EOS
Blockchain
C++
C
React
JavaScript
Node.js
Python

A game developer, currently mostly working on blockchain applications, not related to games anymore. Have experience developing web / mobile applications and smart contracts in wide range languages and technologies like C, C++, Python, NodeJS, C#, Java, ReactJS. Blockchain experience include research done in the university and on my own and developing blockchain applications as a freelancer. EOSIO is the platform I'm most familiar with. Was following it's development since inception and contributed some code to the EOSIO core repository. Developed a lot of smart contracts on it as well as full dApps from backend and smart contracts with unit tests to the frontend. While, it's just so happens that most of my work on EOSIO at the moment, my previous experience with cross platform game development and skill set acquired in other projects throughout the years allows me to work on other types of jobs as well.
$60 hourly
Jim S.
- 5.0
- (14 jobs)
Athens, ATTICA
React.js
API
Progressive Web App
Redux
Web Application
API Integration
RESTful Architecture
Sass
Python
React
JavaScript
Django
Node.js

Top 3% on Upwork | Fortune 500 & Inc. 5000 Contractor I help consumer companies build, launch, and scale apps people actually use. With over a decade of experience building consumer-facing apps, I’ve developed products that reached App Store Top Charts, attracted tens of thousands of users, and converted free users into paying subscribers. Recent Highlights - Built an anonymous confessions app with 10,000+ posts and paid subscribers across Greece - Ranked #2 in the App Store (Social Networking, Greece) within weeks of launch - Scaled survey app panel to 250k+ panelists - Created an AI creative app that generates background scenes for ecommerce products - Reduced chargebacks by 40% via a custom fraud prevention platform What I Do Best - 📱 Consumer App Development - React Native + Expo for high-performance iOS/Android apps - Supabase and custom backends (Python/Django, Node.js, Go) - In-app purchases, subscriptions, notifications, analytics integrations - Growth systems: referrals, gamification, virality loops ------------------ - 📈 Growth & Retention Systems - Optimized onboarding, paywalls, and funnels - Event tracking with Branch, AppsFlyer, Amplitude, Mixpanel - A/B testing, behavioral cohorts, and retention-focused iteration ------------------ - ⚙️ Scalable Platform Architecture - REST APIs & microservices for consumer apps - Supabase + Postgres + AWS/Vercel stack design - Real-time features, moderation systems, and internal tools Why Clients Choose Me ✅ Serial Tech Founder: Built and scaled 15+ startups, I understand product-market fit, not just code ✅ Growth-Oriented: Every feature I ship ties back to activation, retention, or monetization ✅ Consumer Expertise: I know what keeps users coming back and paying ✅ Full Lifecycle Ownership: From MVP to 100K+ users, including infrastructure and analytics If you’re building a consumer app, social product, or creative AI tool, I can help you go from idea to traction, fast!
$75 hourly
Zeeshan E.
- 5.0
- (11 jobs)
Dubai, DU
React.js
Cloud Management
Linux System Administration
DevOps
WordPress
Amazon Web Services
Technical Project Management
SaaS Development
Microservice
Authorize.Net
Stripe
CI/CD
Docker
PostgreSQL
MySQL
Solution Architecture
RESTful API
Node.js
Spring Boot
React
Laravel

I'm a Senior Full-Stack Engineer and Solution Architect with 16+ years of hands-on experience building scalable, secure, and high-performance web, mobile, and enterprise applications — with 40+ successfully delivered freelance projects across multiple platforms. My core stack: PHP/Laravel, React.js, Java/Spring Boot, Node.js, AWS — but I've worked across virtually every major framework and platform throughout my career. What makes me different? I don't just write code — I architect systems. I've helped clients increase yearly revenue by 300%, achieved 99.99% platform uptime after cloud migrations, and reduced processing bottlenecks by 70% using queue-based solutions. I understand both the technical and business side of what you're building. Here's what I typically help clients with: - Custom SaaS platforms and enterprise web applications - Legacy system modernization and cloud migration (AWS) - REST APIs, microservices, and third-party integrations (Stripe, Authorize.Net, PromoStandards) - IoT solutions and embedded system connectivity - CRM development, e-commerce platforms, and DevOps pipelines Whether you need a senior individual contributor, a technical lead for your team, or a solution architect to take your idea from whiteboard to production — I can fill that role. Let's talk about what you're building.
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