Node.js Developer Job Description Template
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Node.js Developer Job Description Template
A Node.js developer plays an essential role in building scalable, high-performance web applications using Node.js. Their expertise in server-side development ensures that back-end components integrate seamlessly with front-end applications. Use the following template to craft a job description for hiring a Node.js developer.
Job Overview
We are seeking a highly motivated and skilled Node.js developer to join our team. The ideal candidate will be responsible for building and maintaining server-side application logic and APIs using Node.js. You will design and develop scalable solutions, ensuring high performance and responsiveness for back-end services.
Key Responsibilities
- Develop back-end services. Write clean, efficient code to create scalable back-end services and APIs using Node.js.
- Collaborate with front-end teams. Work closely with front-end developers to integrate user-facing elements with server-side logic.
- Maintain databases. Design, implement, and optimize database schemas, ensuring data integrity and efficient storage.
- Optimize application performance. Monitor and improve server-side performance and troubleshoot issues related to scalability and speed.
- Ensure security. Implement security best practices, including authentication, authorization, and data encryption.
Qualifications
- Proven experience as a Node.js developer or in a similar back-end development role.
- Strong understanding of JavaScript, Node.js, and related frameworks (e.g., Express.js).
- Excellent problem-solving and debugging skills.
- Ability to design and implement RESTful APIs.
- 3+ years of experience in back-end development, specifically with Node.js.
- Proficiency in database management systems, such as MongoDB, MySQL, or PostgreSQL.
- A degree in computer science or a related field is preferred.
Preferred Skills
- Experience in front-end development (e.g., React, Angular, or Vue.js).
- Familiarity with cloud platforms (e.g., AWS, Azure, or Google Cloud).
- Strong understanding of DevOps practices and containerization tools (e.g., Docker, Kubernetes).
- Knowledge of microservices architecture.
Why Join Us?
- Be part of an innovative team that builds cutting-edge web applications.
- Opportunities for professional growth and development.
- Competitive compensation package, including performance bonuses.
- Flexible working hours and remote work options.
Node.js Developer Hiring Resources
Explore talent to hire Learn about cost factors See interview questionsNode.js Developers you can meet on Upwork
- $35/hr $35 hourly
Muhammad N.
- 5.0
- (22 jobs)
Ali Pur Chattah, PUNJABNode.js
ReduxFlaskSocial Media Account IntegrationHTML5ReactTypeScriptiOSAndroidJavaScriptGraphQLMongoDBReact NativePython💎 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/hr $45 hourly
Asmerom Estifanos E.
- 5.0
- (52 jobs)
Addis Ababa, AANode.js
Microsoft PowerPointDesktop ApplicationTailwind CSSGitRESTful APIExpressJSMongoDBReactVisual BasicJavaScriptC++AutoLISPAutodesk AutoCADI 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/hr $40 hourly
Rommelie L.
- 5.0
- (23 jobs)
Manila, METRO MANILANode.js
SQLAmazon Web ServicesCI/CDDatabaseFastAPINext.jsLangChainReactPythonAPI IntegrationAutomationMachine LearningAI Agent DevelopmentLarge Language ModelMobile AppSaaS DevelopmentAI DevelopmentWeb DevelopmentFull-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/hr $35 hourly
Muhammad N.
- 5.0
- (22 jobs)
Ali Pur Chattah, PUNJABNode.js
ReduxFlaskSocial Media Account IntegrationHTML5ReactTypeScriptiOSAndroidJavaScriptGraphQLMongoDBReact NativePython💎 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/hr $45 hourly
Asmerom Estifanos E.
- 5.0
- (52 jobs)
Addis Ababa, AANode.js
Microsoft PowerPointDesktop ApplicationTailwind CSSGitRESTful APIExpressJSMongoDBReactVisual BasicJavaScriptC++AutoLISPAutodesk AutoCADI 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/hr $40 hourly
Rommelie L.
- 5.0
- (23 jobs)
Manila, METRO MANILANode.js
SQLAmazon Web ServicesCI/CDDatabaseFastAPINext.jsLangChainReactPythonAPI IntegrationAutomationMachine LearningAI Agent DevelopmentLarge Language ModelMobile AppSaaS DevelopmentAI DevelopmentWeb DevelopmentFull-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. - $40/hr $40 hourly
Kimera M.
- 5.0
- (4 jobs)
Kampala Central Division, CNode.js
Next.jsTailwind CSSReduxGraphQLReact BootstrapRESTful APIReactTypeScriptMaterial DesignFigmaCSS 3Adobe XDJavaScriptHTML5Hi 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. - $50/hr $50 hourly
Kian M.
- 4.0
- (14 jobs)
Lexington, MONode.js
HTMLReactAutomationn8nGoogle Sheets AutomationGoogle SheetsGoogle Apps ScriptTypeScriptJavaScriptHi, 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/hr $5 hourly
Zahid H.
- 4.9
- (12 jobs)
Gazipur, DHAKANode.js
SellingProduct SourcingTikTokShopifyEtsyWeb DevelopmentFirebaseMongoDBTailwind CSSBootstrapCSS 3HTML5JavaScriptReacteBay ListingEcommerce Product UploadEtsy ListingData EntryProduct ListingsAre 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/hr $20 hourly
Mai K.
- 5.0
- (6 jobs)
Ho Chi Minh City, SGNode.js
Research MethodsAcademic ResearchLoopBackSCSSNuxt.jsGolangPostgreSQLMongoDBRedisTailwind CSSAngularReactBootstrapVue.jsHTMLJavaScriptFull-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. - $20/hr $20 hourly
Mujeeb u.
- 5.0
- (8 jobs)
Sargodha, PBNode.js
Tailwind CSSReduxFront-End DevelopmentMERN StackWeb DevelopmentWebsite Contentstyled-componentsReactBootstrapHTML5JavaScriptResponsive DesignCSS 3WordPressMujeeb | Full Stack MERN Developer — Scalable, Production-Ready Web ApplicationsI'm a Full Stack MERN Developer with 4+ years of experience building modern, high-performance web applications — from clean frontends to complex distributed backend systems. I specialize in end-to-end development using React.js, Next.js, Node.js, Express.js, Nest.js, MongoDB, and PostgreSQL, with a strong focus on architecture that actually scales under real-world load. What I Can Do for You: ✅ Full Stack Web Application Development (MERN / Next.js) ✅ Frontend Development (React.js, Next.js, Tailwind CSS, ShadCN UI) ✅ Backend Development (Node js, Express js, Nest js) ✅ REST API & GraphQL API Design & Third-Party Integration ✅ Database Design & Optimization (MongoDB, PostgreSQL, Dataverse) ✅ Authentication & Authorization (JWT, OAuth2, Role-Based & Attribute-Based Access Control) ✅ Redis Caching & Session Management — reducing DB load and speeding up APIs significantly ✅ Cron Jobs & Task Scheduling — automating workflows, reports, emails, and background processing ✅ Message Queues & Event-Driven Architecture (BullMQ, RabbitMQ) — for async, decoupled systems ✅ WebSocket & Real-Time Features — live notifications, chats, dashboards ✅ Rate Limiting, API Security & Throttling — production-hardened APIs ✅ Admin Dashboards & SaaS Platforms ✅ Figma / PSD / XD to Pixel-Perfect UI ✅ Performance Optimization, Code Auditing & Bug Fixing ✅ CI/CD Pipelines & Deployment (Vercel, Netlify, VPS, Docker, Cloud) Tech Stack: ✅ React.js • Next.js • TypeScript • Node.js • Express.js • Nest.js ✅ MongoDB • PostgreSQL • Redis • BullMQ ✅ Redux • Zustand • Context API ✅ Tailwind CSS • Bootstrap • Material UI • ShadCN UI ✅ Socket io • REST • GraphQL ✅ Docker • GitHub Actions • Vercel • Netlify • VPS ✅ WordPress • WooCommerce • Performance & SEO Optimization Why Work With Me: ✅ 4+ years of real-world, production-level development experience ✅ I don't just write features — I think about caching strategies, queue design, and system bottlenecks from day one ✅ Clean, modular, and scalable code — easy to hand off or extend ✅ Strong communication, fast turnaround, and reliable delivery ✅ Long-term solutions built for growth, not just quick fixes ✅ Experience across industries — from business websites to complex SaaS platforms I've helped clients build everything from MVPs to enterprise-grade systems — and I bring the same care and technical depth to every project. If you're looking for a developer who understands both the technology and the business behind it, let's connect and build something great. - $15/hr $15 hourly
Janakkumar P.
- 4.9
- (65 jobs)
Idar, GUJARATNode.js
SEO PluginCMS DevelopmentWordPress MigrationCustom Content Management SystemWeb DesignMERN StackMySQLMongoDBPythonAI DevelopmentSaaS DevelopmentWeb DevelopmentReactNext.jsFull-Stack DevelopmentPHPLaravelWordPress PluginWordPress🏆 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/hr $30 hourly
Ishtiaq A.
- 5.0
- (46 jobs)
Karachi, SINDHNode.js
Software DevelopmentPHP ScriptWeb ApplicationReduxReact BootstrapMySQLJavaScriptPHPLaravelVue.jsReactBack-End DevelopmentFront-End DevelopmentFull-Stack DevelopmentSenior 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/hr $35 hourly
Juan Sebastian F.
- 5.0
- (0 jobs)
Bogota, DCNode.js
Cloud ServicesMicroserviceAPI IntegrationASP.NET Web APIASP.NET CoreCSSHTMLTailwind CSSTypeScriptJavaScriptAngularASP.NETReactA 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/hr $50 hourly
Aldrin M.
- 5.0
- (2 jobs)
Campbelltown, NSWNode.js
Google Cloud PlatformAWS DevelopmentAWS CloudFrontAWS FargateAWS AmplifyAWS LambdaSalesforcePythonFull-Stack DevelopmentTypeScriptGraphQLReact NativeMongoDBReactI 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/hr $52 hourly
Chris Z.
- 5.0
- (4 jobs)
Beijing, BEIJINGNode.js
Neo4jChatbot DevelopmentAI Audio GenerationAI Video GenerationLead GenerationHighLevelEmail AutomationAPI IntegrationCRM AutomationAI Agent Developmentn8nOpenAI CodexVercelSupabaseAWS FargateReactJavaScriptRetrieval Augmented GenerationPythonI 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! - $95/hr $95 hourly
Vano E.
- 5.0
- (9 jobs)
Vanadzor, LORINode.js
C++JavaScriptLaravelPHPTypeScriptGraphQLSQLJavaIT ConsultationMachine LearningDeep LearningLinux System AdministrationDeep Neural NetworkPython⭐⭐⭐⭐⭐ I’m an AI & Automation Systems Architect with a strong background in full-stack engineering, Python development, machine learning, and DevOps. I focus on building intelligent systems that optimize how businesses operate by connecting tools, data, and workflows through automation and AI. I don’t just build applications. I design and implement systems where processes are automated, information is structured, and AI supports real operational decisions. What I Do ✔️ Analyze and optimize business workflows and information flow ✔️ Design AI-driven automation systems for operations ✔️ Build end-to-end automations using APIs, webhooks, and automation platforms ✔️ Integrate LLMs and machine learning models into real business workflows ✔️ Architect scalable backends, APIs, and data pipelines ✔️ Connect databases, CRMs, and tools into unified intelligent systems ✔️ Set up DevOps, CI/CD, containerization, and cloud infrastructure ✔️ Maintain, optimize, and scale existing systems Technical Expertise ✔️ Python, JavaScript, SQL ✔️ Django, Flask, React, Node.js ✔️ Machine Learning, LLM integration, embeddings, RAG architectures ✔️ PostgreSQL, MySQL, MongoDB, Redis ✔️ Automation platforms, API orchestration, webhooks ✔️ Docker, Kubernetes, CI/CD, AWS, GCP, Azure Approach I start by understanding how your current processes work. Then I design the system architecture. Then I implement automation and AI at the points where it creates measurable impact. The result is a reliable, AI-assisted operational system that improves efficiency and reduces manual work. Want to work together? I’d love to hear from you! - $45/hr $45 hourly
Azmat R.
- 4.7
- (13 jobs)
Lahore, PUNJABNode.js
ArchitectureSoftware Architecture & DesignOpenAI APILLM PromptAI ImplementationDatabase DesignAmazon S3Vue.jsCRM DevelopmentAPI IntegrationReact NativeSaaS DevelopmentFull-Stack DevelopmentREST APIMySQLReactMERN StackPHPLaravelI 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. - $56/hr $56 hourly
Yan O.
- 5.0
- (6 jobs)
Kiev, KYIV CITYNode.js
FlutterUnityECMAScript 6API DevelopmentAPI IntegrationJavaScriptDockerGolangCSS 3HTML5MongoDBReactjQueryC#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/hr $90 hourly
Stefano M.
- 5.0
- (2 jobs)
Verona, VRNode.js
Ruby on RailsVue.jsExpressJSReactShopifyRubyGolangAPIJavaScriptSpreeReact NativePythonFlutterTechnical Project ManagementNice 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 - $80/hr $80 hourly
Adrian M.
- 5.0
- (2 jobs)
Perth, WANode.js
AI ChatbotChatGPT API IntegrationLLM Prompt EngineeringAI DevelopmentDjangoOracle PLSQLAzure DevOpsApache TomcatJavaScriptReactPythonJavaC#SQLLooking 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/hr $35 hourly
Sarwaichraza Q.
- 5.0
- (8 jobs)
Karachi, SDNode.js
PostgreSQLGenerative AIOpenAI APISaaS DevelopmentArtificial IntelligenceAPI Development.NET CoreSoftware Architecture & DesignPythonTypeScriptSoftware DesignWeb DevelopmentReactC#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. - $35/hr $35 hourly
Francis Deo A.
- 4.8
- (138 jobs)
Leyte, EASTERN VISAYASNode.js
ScriptingBot DevelopmentAmiBroker Formula LanguageDatabaseRabbitMQMetaTrader 5Data ScrapingAutomationRESTful APITwilio APIDjangoPythonWindows Presentation FoundationC#Hello and Mabuhay from the Philippines 🇵🇭 I’m a software engineer with 10+ years of experience building automation systems, AI workflows, and scalable APIs that streamline operations and reduce manual work. I help businesses replace repetitive tasks with reliable, automated systems, saving time, lowering costs, and improving efficiency. What I deliver: AI & workflow automation API integrations & backend systems IoT services & RESTful APIs Data processing & reporting systems Internal tools & dashboards 💡 I don’t just write code, I build systems that make businesses run better. Let’s build something that actually moves your business forward. - $100/hr $100 hourly
Suat K.
- 4.6
- (11 jobs)
Istanbul, ISTANBULNode.js
BlockchainSolidityweb3.js.NET CoreGenerative AIIonic FrameworkReact NativeSalesforceSwiftAI DevelopmentReactPHPVue.jsTypeScriptJavaScriptKotlinAngular🏆 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/hr $45 hourly
Karlen M.
- 5.0
- (8 jobs)
Yerevan, YEREVANNode.js
Cloud ArchitectureMySQLNext.jsReact NativeTypeScriptMobile AppSoftware DevelopmentWordPress e-CommerceSquarespaceAWS AmplifyPostgreSQLReactServerless ComputingShopifyWeb DevelopmentJavaScriptMachine LearningPythonSoftware 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/hr $36 hourly
Tadas V.
- 5.0
- (7 jobs)
Vilnius, VILNIUSNode.js
Smart ContractEOSBlockchainC++CReactJavaScriptPythonA 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/hr $60 hourly
Jim S.
- 5.0
- (14 jobs)
Athens, ATTICANode.js
APIProgressive Web AppReduxWeb ApplicationAPI IntegrationRESTful ArchitectureSassPythonReactJavaScriptDjangoTop 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/hr $75 hourly
Zeeshan E.
- 5.0
- (11 jobs)
Dubai, DUNode.js
Cloud ManagementLinux System AdministrationDevOpsWordPressAmazon Web ServicesTechnical Project ManagementSaaS DevelopmentMicroserviceAuthorize.NetStripeCI/CDDockerPostgreSQLMySQLSolution ArchitectureRESTful APISpring BootReactLaravelI build and fix web applications for businesses that need them to actually work. Laravel and PHP on the back end, React and TypeScript on the front. I've been doing this for 19 years, currently as a Top Rated freelancer here, and most of that time on live production systems where downtime costs real money. Three things I'm most useful for: - Payment and API integrations. I've built and maintained Authorize.Net, Stripe, and PromoStandards integrations on live e-commerce platforms. This is the kind of work where one small mistake double-charges a customer or breaks an order feed. Whether an integration is misbehaving or you're starting one from scratch, this is my home turf. - Rescuing PHP/Laravel projects that are in trouble. Inherited a codebase nobody understands? Something breaking under load in production? I spend a lot of my time firefighting on a live enterprise platform, so I'm comfortable walking into a mess, finding the real problem, and fixing it without breaking three other things. - Building Laravel and React products end to end. Custom SaaS, CRMs, internal tools, from the database and API up through the UI. When a project needs it, I also handle the infrastructure side, including AWS and queue-based processing for heavy jobs, so you're not left hiring a separate DevOps person. I work US hours, reply quickly, and I'd rather tell you something's a bad idea than quietly build it. Send me what you're working on and I'll tell you honestly whether I'm the right fit. - $75/hr $75 hourly
Ankit H.
- 4.9
- (45 jobs)
Gurgaon, HARYANANode.js
Neo4jRedisElasticsearchPostgreSQLVector DatabaseMake.comClaudeTypeScriptn8nLLM Prompt EngineeringLarge Language ModelPythonChatGPT API IntegrationAutomationRetrieval Augmented GenerationLangChainOpenAI APIAI ChatbotAI Agent DevelopmentI'm an AI agent developer and backend architect with 10+ years building production AI systems: autonomous agents, RAG pipelines, and automation that hold up under real users and real load. I've scaled platforms to 50M+ users and shipped AI for clients across the US, UK, and Australia. IIT Kanpur alumnus. I bring both the systems depth to make AI reliable and the product sense to make it useful. What I build: 1. AI agents and agent infrastructure. Autonomous agents, MCP servers, tool use, function calling, and multi-agent orchestration that run real workflows across ops, sales, and support. I also build the harness around them, state, retries, guardrails, and observability, so they hold up in production, not just in demos. 2. RAG pipelines that survive real load. Query embedding, parallel vector search, context assembly, and streaming LLM synthesis, with ETL ingestion, chunking, dedup, and PII guardrails built in. 3. Scalable, multi-tenant backend architecture. Node.js, TypeScript, NestJS, and Python microservices with multi-tenancy, governance, and security designed in from the start, over polyglot data layers: Postgres, MySQL, MongoDB, Redis, Elasticsearch, Neo4j, ClickHouse. 4. Workflow automation and integrations. End-to-end automations with n8n, Make, Zapier, and Temporal, wired into the tools teams already use: Slack, Notion, WhatsApp, ClickUp, Telegram, and more. Selected work: - Scaled a creator-economy platform to 50M+ users on AWS EKS and Cloudflare Workers, including payments infra with Stripe Connect, Apple IAP, and Google Play Billing. - Built AI agents and MCP servers for an AI-native business platform handling finance, sales, and support workflows. - Re-architected an autonomous AI worker platform for multi-tenancy, scalability, governance, and security. - Designed a conversational RAG copilot on PostgreSQL + pgvector for project management and admin tasks via natural language. - Integrated Facebook, Google, Instagram, and TikTok ad APIs across 800+ store locations for local inventory ads and ROI tracking. Core stack: Models and frameworks: GPT-4o, Claude, Gemini, LangChain, LlamaIndex, AutoGen, CrewAI, LangGraph, LangSmith, Semantic Kernel, DSPy. Agent infrastructure: MCP servers, function calling, tool use, multi-agent orchestration, OpenClaw, Hermes, LangServe, Modal, Replicate. Vectors and memory: Pinecone, pgvector, Weaviate, Chroma, Redis. ML and DL: TensorFlow, PyTorch, Hugging Face, Scikit-learn. Backend: Node.js, TypeScript, NestJS, Python, FastAPI, GraphQL, WebSockets, WebRTC, RabbitMQ. Data: Postgres, MySQL, MongoDB, Redis, Elasticsearch, Neo4j, ClickHouse, Firebase. Integrations: Slack, Notion, WhatsApp, ClickUp, Telegram, Twilio, Akamai, Rosette, Facebook Graph, Stripe, and marketing APIs across Facebook, Google, TikTok, Twitter, and Dropbox. Cloud: AWS (Lambda, RDS, SQS, OpenSearch, Neptune, S3, ElastiCache, Comprehend, Rekognition), GCP (Firestore, Cloud Functions). If you need someone who can take an AI idea from prototype to a system that survives real users and real load, let's talk. I reply fast and ship faster. - $35/hr $35 hourly
Ridhwan S.
- 4.9
- (8 jobs)
Putrajaya, PUTRAJAYANode.js
Spring BootGolangASP.NETDevOpsCI/CDPythonTerraformDockerKubernetesNetwork AnalysisAWS Systems ManagerNetwork SecurityLoad BalancingCloud ComputingNetwork DesignContainerizationJavaScriptGoogle Cloud PlatformServer VirtualizationThe engineer you call when software, infrastructure, and networking all need to work together. 🚀 Senior DevOps Engineer | Backend Developer | Cloud & Platform Engineer Most technical problems don't exist in a single layer. An application is slow, but the root cause is the database. A deployment fails because of infrastructure. An API works locally but breaks in production because of networking. AI features underperform because the data pipeline was designed incorrectly. My background spans software development, cloud infrastructure, Linux systems, networking, automation, and AI integrations, allowing me to build and troubleshoot systems end-to-end. Over the last 5+ years, I have worked across AWS, GCP, Kubernetes, Docker, Terraform, CI/CD automation, backend APIs, distributed systems, AI-powered applications, and production environments supporting real business operations. 🎯 What I Can Help With ✅ Backend Development (Node.js, Python, Go, .NET) ✅ Cloud Infrastructure (AWS, GCP) ✅ Infrastructure as Code (Terraform) ✅ Kubernetes & Docker Platforms ✅ CI/CD Automation (GitHub Actions, GitLab CI, Jenkins) ✅ Linux Administration & Troubleshooting ✅ Database Design & Optimization ✅ AI & LLM Integrations (OpenAI, RAG, AI Agents) ✅ Monitoring, Observability & Reliability Engineering ✅ Performance Optimization & Cloud Cost Reduction 🔧 Clients Typically Bring Me In For • Building platforms that require both development and infrastructure expertise • Solving production issues that span applications, databases, networking, and cloud services • Modernizing deployment workflows and DevOps practices • Designing scalable cloud-native architectures • Integrating AI capabilities into existing products • Reducing operational complexity and cloud costs 💻 Core Technologies ☁️ Cloud AWS • GCP • Azure ⚙️ Infrastructure Terraform • Docker • Kubernetes • ECS • EKS • Linux 🖥 Backend Node.js • Python • Go • .NET • FastAPI 🌐 Frontend Next.js • React • TypeScript 🗄 Databases PostgreSQL • MySQL • MongoDB • Redis 🚀 DevOps GitHub Actions • GitLab CI • Jenkins • Monitoring • Observability 🤖 AI OpenAI • LLM Integrations • RAG Systems • AI Agents 💡 I work best with startups, SaaS companies, and engineering teams that need a single engineer capable of owning systems end-to-end—from architecture and development to deployment and operations. 🟢 If your project involves software, infrastructure, automation, or AI, let's talk. Want to browse more talent?
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