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I don’t just write code, I build SaaS products that ship fast, scale efficiently, and generate revenue. Senior Full Stack Engineer with 8+ years of experience building SaaS platforms, AI-powered systems, and marketplaces using modern JavaScript stacks. I specialize in Node.js + React + Next.js architectures that are fast, scalable, and production-ready. ⚛️ 𝐅𝐑𝐎𝐍𝐓𝐄𝐍𝐃 (𝐑𝐞𝐚𝐜𝐭 / 𝐍𝐞𝐱𝐭.𝐣𝐬) - High-performance UIs with React.js, Next.js, TypeScript - Lighthouse 90+ / LCP under 1.5s - Optimized bundles (40%+ reduction) ⚙️ 𝐁𝐀𝐂𝐊𝐄𝐍𝐃 (𝐍𝐨𝐝𝐞.𝐣𝐬 / 𝐀𝐏𝐈𝐬) - Scalable APIs with Node.js, Express, NestJS - PostgreSQL, Supabase, Redis for high-performance data handling - Systems handling 1M+ monthly requests at 99.9% uptime ☁️ 𝐂𝐋𝐎𝐔𝐃 & 𝐀𝐑𝐂𝐇𝐈𝐓𝐄𝐂𝐓𝐔𝐑𝐄 - AWS (Lambda, S3, RDS, API Gateway), Supabase, Firebase - Serverless + microservices architecture - Built for scale from day one no rewrites later 🔥 𝐑𝐄𝐒𝐔𝐋𝐓𝐒 𝐈 𝐃𝐄𝐋𝐈𝐕𝐄𝐑 - MVP → production in 2–8 weeks - +30% conversion improvements - -60% latency, 3–5x faster databases - Automation reducing manual work up to 90% 🚀 𝐖𝐇𝐀𝐓 𝐈 𝐁𝐔𝐈𝐋𝐃 - SaaS platforms & startup MVPs - React / Next.js web apps & dashboards - AI-powered applications (LLMs, automation, RAG) - Marketplaces (Stripe, multi-vendor, complex flows) - APIs, integrations, and data systems - React Native apps connected to scalable backends 🛠 𝐓𝐄𝐂𝐇 𝐒𝐓𝐀𝐂𝐊 - Frontend: React, Next.js, TypeScript, Tailwind - Backend: Node.js, Express, NestJS - Database: PostgreSQL, Supabase, MongoDB, Redis - Cloud: AWS, Vercel, Firebase -AI: OpenAI, LLMs, RAG pipelines 🔥 𝐖𝐇𝐀𝐓 𝐘𝐎𝐔 𝐆𝐄𝐓 ✔ Scalable SaaS architecture (not throwaway MVPs) ✔ Fast, optimized frontend (LCP, 1.5s) ✔ Clean, maintainable backend systems ✔ Production-ready code with CI/CD ✔ Clear communication + weekly progress updates I’m not just a developer I think in products, scale, and revenue. 🚀 Click Invite or Hire to build something that actually grows.

🥇 𝐓𝐨𝐩-𝐑𝐚𝐭𝐞𝐝 𝐅𝐫𝐞𝐞𝐥𝐚𝐧𝐜𝐞𝐫 | 🏅 𝐔𝐩𝐰𝐨𝐫𝐤 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 | 🌟 𝟓-𝐒𝐭𝐚𝐫 𝐑𝐚𝐭𝐢𝐧𝐠𝐬 | ✅ 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 I help 𝐬𝐭𝐚𝐫𝐭𝐮𝐩𝐬 𝐛𝐮𝐢𝐥𝐝 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐒𝐚𝐚𝐒 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 𝐚𝐧𝐝 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 𝐮𝐬𝐢𝐧𝐠 𝐑𝐞𝐚𝐜𝐭, 𝐍𝐞𝐱𝐭.𝐣𝐬, 𝐚𝐧𝐝 𝐦𝐨𝐝𝐞𝐫𝐧 𝐀𝐏𝐈𝐬. I also develop high-performance mobile apps using React Native and Flutter. Hi, I am Hassan, a 𝐒𝐞𝐧𝐢𝐨𝐫 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐰𝐢𝐭𝐡 𝟕+ 𝐲𝐞𝐚𝐫𝐬 of experience building production-ready software for startups and growing businesses. 🔹 𝐖𝐡𝐚𝐭 𝐈 𝐝𝐞𝐥𝐢𝐯𝐞𝐫: - End-to-end SaaS product development (MVP to scale) - High-performance web apps (React, Next.js) - Cross-platform mobile apps (React Native / Flutter) - API integrations, backend systems & scalable architectures - Performance optimization & system scaling 🔹 𝐌𝐲 𝐚𝐩𝐩𝐫𝐨𝐚𝐜𝐡: - Clean, maintainable, production-ready code - Clear communication & milestone-based delivery - Focus on performance, scalability, and user experience - Long-term support and reliable collaboration 🔹 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤: - Frontend: React, Next.js, TypeScript - Backend: Node.js, Express - Mobile: React Native (CLI & Expo), Flutter - Database: PostgreSQL, MongoDB, Firebase, Supabase - APIs: REST, GraphQL - State Management: Redux, Zustand, Context API 🔹 𝐖𝐡𝐚𝐭 𝐈’𝐯𝐞 𝐛𝐮𝐢𝐥𝐭: - SaaS dashboards & subscription-based platforms - CRM systems & admin panels - Real-time apps & API integrations - Mobile apps with smooth UI/UX and scalable backend If you're building a SaaS product or need a reliable developer to scale your web or mobile app, let’s connect and discuss your project.

Certified Full-stack JavaScript Developer | React | Next.js | Node.js | NestJS | TypeScript | AI Integrations | Shopify | AWS I'm Hassan Habib Tahir, and I help startups and growing businesses turn complex ideas into clean, scalable products that users love. With 5+ years of full-stack development experience and 200+ completed projects, I don't just write code—I solve business problems with technology. Recent wins: ✅ Built an AI content assistant that reduced client onboarding by 60% (React + Next.js + OpenAI) ✅ Scaled a real-time collaboration platform from 100 to 10,000+ concurrent users (Node.js + real-time tech + AWS) ✅ Launched a Shopify app now processing $50K+ monthly (Custom API + Stripe) ✅ Developed an admin dashboard that saves 40 hours/week of manual work (NestJS + PostgreSQL + React) What I build: 🚀 SaaS Platforms & Admin Dashboards MVPs, enterprise dashboards, analytics platforms with real-time data, role-based access, and clean UI. 🤖 AI-Powered Applications ChatGPT integrations, LLM workflows, AI assistants, content generators—making AI useful for real users. 🛒 Shopify Stores & Custom Apps Complete store setup, theme customization, headless commerce with Next.js and Shopify, custom apps with APIs. 📱 Cross-Platform Mobile Apps React Native and Flutter apps that feel native and perform fast. ⚡ Real-Time Features Live chat, notifications, collaborative tools, video calls using real-time communication tools. 💳 Payment & API Integrations Stripe, PayPal, Salesforce, Google Workspace, Zoom, Firebase—seamless third-party connections. ☁️ Cloud Deployment & Scaling AWS architecture with EC2, Lambda, S3, and CloudFront. Docker containers, CI/CD pipelines, and performance optimization. My Tech Stack: Frontend Development: React, Next, TypeScript, JavaScript ES6, Redux Toolkit, Context API, Tailwind CSS, Material UI, Bootstrap, Ant Design, Styled Components, SASS, SCSS, HTML5, CSS3, Responsive Design, React Native, Flutter Backend Development: Node, Express, NestJS, RESTful APIs, GraphQL, Microservices, Serverless Architecture, WebSockets, Socket, API Design, JWT Authentication, OAuth, Passport Database and Storage: PostgreSQL, MongoDB, MySQL, Firebase Firestore, Firebase Realtime Database, Redis, Prisma ORM, Mongoose, Database Design, Query Optimization, Data Modeling AI and Machine Learning: OpenAI API, ChatGPT, GPT-4, GPT-3, LangChain, AI Chatbots, Prompt Engineering, Natural Language Processing, AI Automation, Vector Databases E-commerce and Payment: Shopify Liquid, Shopify Theme Development, Shopify App Development, Shopify API, WooCommerce, Stripe, PayPal, Razorpay, Payment Gateway Integration, Checkout Customization Third-Party Integrations: Google Maps API, Google Calendar API, Google Analytics, Salesforce CRM, Zoom SDK, Twilio, SendGrid, Slack API, Discord API, WalletConnect, Web3, Blockchain Integration Real-Time Technologies: Socket, WebSockets, WebRTC, Server-Sent Events, Real-time Notifications, Live Chat, Collaborative Tools Cloud and DevOps: AWS EC2, AWS Lambda, AWS S3, AWS RDS, AWS CloudFront, AWS API Gateway, AWS Elastic Beanstalk, Docker, Docker Compose, Nginx, Apache, GitHub Actions, GitLab CI, Jenkins, PM2, SSL, TLS Testing and Quality: Jest, React Testing Library, Mocha, Chai, Supertest, Unit Testing, Integration Testing, End-to-End Testing, Test-Driven Development Version Control and Tools: Git, GitHub, GitLab, Bitbucket, VS Code, Postman, Insomnia, Jira, Trello, Notion, Figma to Code Development Practices: Agile, Scrum, Clean Code, SOLID Principles, Design Patterns, Code Reviews, Pair Programming, Documentation, Performance Optimization, Security Best Practices What you get working with me: ✔️ Clear communication – Daily updates, no jargon, you always know what's happening ✔️ Fast response time – Questions answered within hours ✔️ Business thinking – I'll spot issues before they become expensive problems ✔️ Clean, maintainable code – Not spaghetti that breaks in 3 months ✔️ On-time delivery – Deadlines matter. I hit them. ✔️ Long-term support – I don't disappear after launch I'm NOT the right fit if: ❌ You're looking for the cheapest option ❌ You want someone who just follows orders without thinking ❌ You need it done "yesterday" with zero planning I AM the right fit if: ✅ You value quality and want things done right ✅ You're building something meaningful ✅ You want honest feedback and proactive communication ✅ You're looking for a long-term technical partner Let's talk. Send me a message with: What you're building (1-2 sentences) Your biggest challenge right now Your timeline I'll review your project and respond within 24 hours with an honest assessment. Available full-time. Flexible across time zones. Let's build something great together. — Hassan

👨‍💻 10+ Years of Experience 💯 100% Job Success 👉 𝗜 𝗦𝗢𝗟𝗩𝗘 𝗬𝗢𝗨𝗥 𝗣𝗥𝗢𝗕𝗟𝗘𝗠𝗦 𝗔𝗡𝗗 𝗛𝗘𝗟𝗣 𝗬𝗢𝗨 𝗧𝗢 𝗚𝗥𝗢𝗪 𝗬𝗢𝗨𝗥 𝗕𝗨𝗦𝗜𝗡𝗘𝗦𝗦. 𝗛𝗲𝗹𝗹𝗼, 𝗜’𝗺 𝗠𝘂𝗵𝗮𝗺𝗺𝗮𝗱 𝗨𝗺𝗮𝗿 𝗔𝗵𝗺𝗮𝗱! A passionate software engineer with over 10 years of experience in developing Web and Mobile apps using state-of-the-art technologies. I've assisted numerous startups in Canada and the UK, delivering exceptional results. I take pride in crafting projects with love, care, and hard work, including Techna (techna.pk), CanBusinessClub (canbusiness.club), and Quizzer (quizzer-demo.web.app). With expertise in JavaScript, ReactJS, NodeJS, MongoDB, and Firebase (including Cloud Functions, Authentication, Firestore, Storage, and Hosting), I've built robust and scalable solutions. I've also worked on WordPress theme and plugin development, integration with various APIs such as Google Maps, Facebook, Twitter, Twilio, and payment gateways like Stripe. Additionally, I'm proficient in Heroku, Amazon AWS (EC2, Lambda, S3, Elastic Beanstalk), Docker, Kubernetes, and more. 👉 𝗪𝗵𝘆 𝗰𝗵𝗼𝗼𝘀𝗲 𝘁𝗼 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵 𝗺𝗲? I am committed to customer satisfaction and delivering reliable, attractive, scalable, cost-effective, and high-quality products. Quality takes precedence over quantity for me, as I prefer to focus on a select few projects where I can deliver exceptional work rather than spread myself thin. Once we collaborate, you will witness your project transforming into an innovative reality. ✉️ Feel free to reach out to me for more details about my skills and experience, or to discuss how I can contribute to your project.

Building SaaS Platforms, AI Applications, Startup MVPs, and Production Web Applications as a React Developer, Next.js Developer, and Full Stack Developer React Node.js. 📥 Click Invite or Hire to discuss your project. ABOUT ME ========= As a Senior React Developer and Full Stack Developer React Node.js, I build scalable SaaS Platforms, AI-powered Web Applications, Startup MVPs, Admin Dashboards, CRM Systems, ERP Systems, Marketplace Platforms, and Business Applications using React.js, Next.js, Node.js, TypeScript, PostgreSQL, MongoDB, and Supabase. As a Next.js Developer, I develop SEO-friendly, production-ready web applications with clean architecture, reusable components, API integrations, authentication systems, payment gateways, and modern UI. As a Full Stack Developer React Node.js, I handle complete product development from idea to production, including planning, frontend development, backend APIs, database design, AI integration, deployment, and long-term maintenance. What I Can Build ============= ✔ SaaS Platforms & Startup MVPs ✔ AI-Powered Web Applications ✔ AI Chatbots & AI Agents ✔ OpenAI & ChatGPT Integrations ✔ LangChain & RAG Applications ✔ Admin Dashboards, CRM & ERP Systems ✔ REST APIs & Third-Party Integrations ✔ Payment & Subscription Systems (Stripe) ✔ Real-Time Applications & Automation Workflows Tech Stack ========= Frontend: React.js, Next.js, TypeScript, Tailwind CSS Backend: Node.js, Express.js, NestJS Database: PostgreSQL, MongoDB, Supabase AI: OpenAI API, ChatGPT, LangChain, RAG, AI Agents Cloud: AWS, Docker, Vercel PRODUCTION EXPERIENCE ======================= As a Full Stack Developer React Node.js, contributed production features for KalPay Financials, developing financing workflows and merchant integrations. As a React Developer, developed education financing modules for KalPay Taleem, enabling installment-based payment systems for universities. As a Next.js Developer, built advanced property search, listing management, and marketplace features for Graana, one of Pakistan's leading real estate platforms. As a Full Stack Developer React Node.js, developed cross-border eCommerce functionality and order management for Mayfair High Street. As an AI Developer and React Developer, built recruitment platforms including AI Candidate Matching, Applicant Tracking Systems, Recruiter Dashboards, Hiring Workflows, and AI-powered automation for CollarHire and Hyring AI. LONG-TERM DEVELOPMENT PARTNER ================================ Whether you need a React Developer, Next.js Developer, Full Stack Developer React Node.js, AI Developer, Node.js Developer, MERN Stack Developer, or SaaS Developer, I can help build, improve, scale, and maintain your product from MVP to production. Keywords: React Developer | React JS Developer | React Frontend Developer | Frontend Developer React | Next.js Developer | Full Stack Developer React Node.js | Node.js Developer | MERN Stack Developer | JavaScript Developer | TypeScript Developer | AI Developer | OpenAI Developer | ChatGPT Developer | LangChain Developer | RAG Developer | SaaS Developer | Startup MVP Developer | PostgreSQL | MongoDB | Supabase | Stripe | Docker | AWS

With 3+ years of experience in Front-End and Full-Stack Web Development, I build fast, responsive, and user-friendly web applications using React.js, Next.js, JavaScript, HTML, CSS, Tailwind CSS, Node.js, Express.js, and MongoDB. Whether you need a modern landing page, business website, admin dashboard, SaaS application, or a complete MERN stack solution, I deliver clean, scalable, and production-ready code that helps businesses grow online. Why Hire Me ✔ 3+ Years of Professional Web Development Experience ✔ Expertise in React.js, Next.js & MERN Stack Development ✔ Pixel-Perfect Figma to Code Conversion ✔ Clean, Scalable & Maintainable Code ✔ Fast Communication & Reliable Support ✔ Responsive Design Across All Devices ✔ API Integration & Dynamic Data Handling I focus on building high-performance web applications that provide excellent user experiences and support business growth. CORE EXPERTISE • React.js & Next.js Development • MERN Stack Web Applications • Figma/PSD/XD to Responsive Website Conversion • Admin Dashboards & SaaS Platforms • REST API Integration • Redux Toolkit & State Management • Tailwind CSS & Bootstrap Development • MongoDB Database Integration • Responsive & Mobile-First Design • Performance Optimization & SEO Best Practices • Cross-Browser Compatibility Technical Stack Frontend: React.js, Next.js, JavaScript (ES6+), TypeScript, HTML5, CSS3, Tailwind CSS, Bootstrap 5, Redux Toolkit Backend: Node.js, Express.js, MongoDB, REST APIs Tools: Git, GitHub, Firebase, Postman, Vercel, Netlify 📩 Let's Build Something Great Need a React.js Developer, Next.js Developer, or MERN Stack Developer for your project? I'm available to start immediately and would love to discuss your requirements. 👉 Click "Invite" or send me a message, and let's turn your idea into a high-quality web application. 🔍 Keywords to find me frontend developer, web developer, react developer, react js developer, next js developer, mern stack developer, full stack developer, javascript developer, node js developer, express js developer, mongodb developer, redux toolkit, figma to react, figma to next js, figma to html, responsive web design, admin dashboard, saas application, landing page developer, ecommerce website, web application development, frontend development, full stack web development