Full-Stack Developer | Backend Developer | SaaS Developer | MERN Pro Hi, I am Gaurav Kumar, a Full-Stack Developer specializing in Backend Development, SaaS Applications, and MERN Stack solutions. I help startups, entrepreneurs, agencies, and established businesses build secure, scalable, and high-performing web applications that drive growth and deliver exceptional user experiences. With years of experience in modern web development, I have successfully developed SaaS platforms, CRM systems, marketplaces, business automation tools, dashboards, enterprise applications, and custom web solutions. My expertise covers the entire development lifecycle, from product planning and architecture design to deployment, optimization, and ongoing support. ----------- My Expertise -------------- Full-Stack Development - Custom Web Application Development - Enterprise Software Development - Scalable Application Architecture - Frontend & Backend Development - API Development & Integration - Cloud-Based Applications Backend Development - Node.js Development - Express.js Development - RESTful API Development - Database Architecture & Optimization - Authentication & Authorization Systems - Payment Gateway Integration - Server Performance Optimization MERN Stack Development - MongoDB - Express.js - React.js - Node.js - Redux - Next.js - TypeScript SaaS Development - SaaS MVP Development - Multi-Tenant SaaS Platforms - Subscription-Based Systems - User Management & Permissions - Analytics Dashboards - Workflow Automation Solutions - Scalable SaaS Architecture Technologies I Work With - JavaScript (ES6+) - TypeScript - React.js - Next.js - Node.js - Express.js - MongoDB - PostgreSQL - MySQL - Redis - Docker - AWS - Firebase - GraphQL - REST APIs - Git & GitHub What I Can Build ✔ SaaS Platforms ✔ CRM & ERP Systems ✔ Marketplace Applications ✔ Business Automation Tools ✔ Admin Dashboards ✔ Startup MVPs ✔ Booking & Scheduling Platforms ✔ API-Driven Applications ✔ Real-Time Applications ✔ Enterprise Portals ✔ AI-Powered Web Applications ✔ Custom Software Solutions Why Clients Choose Me I believe successful software is more than just clean code. It should be secure, scalable, maintainable, and aligned with business goals. When working on a project, I focus on: - Scalable Architecture - Clean & Maintainable Code - High Performance & Security - Modern Development Practices - Business-Oriented Solutions - Long-Term Scalability - Exceptional User Experience Whether you need a complete SaaS product, a custom web application, a robust backend system, API development, or a full MERN Stack solution, I can help transform your idea into a reliable and scalable digital product. Let's discuss your project and build software that creates real business value and long-term success. Core Skills: Full-Stack Development, Backend Development, SaaS Development, MERN Stack Development, React.js, Next.js, Node.js, Express.js, MongoDB, PostgreSQL, API Development, JavaScript, TypeScript, Cloud Solutions, Startup MVP Development, Enterprise Application Development. 🚀

I'm a full stack engineer with 14+ years building headless CMS platforms and modern frontends for growing brands and agencies. I design and deliver production ready Sanity, Prismic, Strapi, and Builder .io solutions paired with Next.js, and I layer in AI driven automation, n8n workflows, auto tagging, metadata generation, to cut editorial workload and speed up publishing. All delivered with clear milestones and enterprise grade security. What I deliver: Headless CMS: schema design, migrations, editorial workflows, multi site content reuse Frontend: Next.js and React, SSR/SSG, Tailwind, performance and SEO optimization AI powered workflows: automated tagging, metadata generation, and multi channel publishing pipelines built on top of your CMS Integrations and eCommerce: headless patterns for Magento and Shopify, API integrations, AI driven product recommendations Cloud and DevOps: CI/CD, deployments, monitoring, security hardening on AWS, GCP, DigitalOcean Support and training: ongoing maintenance and team enablement for content ops Selected outcomes ACMS, agency client: Built and maintain a Sanity based headless CMS that simplified editorial workflows and enabled consistent multi channel publishing. Client feedback: his breadth of knowledge and dedication has been a huge asset as we grow. eCommerce migration: Replaced a legacy CMS with a headless content layer and Next.js storefront, result was noticeably faster pages and smoother editorial updates. AI workflow automation: Built an n8n pipeline to auto generate metadata, auto tag content, and trigger multi environment publishes, cutting manual tagging and publishing overhead. Why work with me: Top Rated Plus, 100% Job Success, $600K+ earned across 169 jobs Clear milestones, QA driven delivery, fast communication Productized discovery: a scoped one page plan with cost and timeline so you know exactly what you'll get Next step: book a 30 minute consultation and I'll send a one page plan within 48 hours, or send me the job link and I'll draft a tailored plan for it.

Engineering that ships. Architecture that scales. Accountability from start to finish. I've built production-grade applications for startups and scaling businesses across fintech, healthcare, logistics, e-commerce, and SaaS, using React, Next.js, Node.js, and React Native. If you need a full-stack developer who owns the architecture, writes clean code, and delivers without micromanagement, we're a good fit. What I Build I'm a full-stack developer and React developer who handles everything from database design to pixel-precise frontend, end to end. Frontend: React.js, Next.js, TypeScript, Tailwind CSS Backend: Node.js, Express.js, Fastify, REST APIs, GraphQL Mobile: React Native, Flutter, Swift (iOS), Kotlin (Android) Database: PostgreSQL, MongoDB, database design & migrations Cloud & DevOps: AWS, GCP, Azure, Vercel, Nginx, CI/CD Integrations: Stripe, Shopify, OpenAI, Contentful, Strapi, Sanity Whether it's a MERN stack web app, a cross-platform mobile application, or a SaaS platform with complex backend logic, I take full ownership from architecture to deployment. Industries I've Worked In Fintech & Crypto · Healthcare & Med Spa · Logistics & Supply Chain · E-Commerce & Shopify · Real Estate · Social Media · Education & E-Learning · Web3 Beyond JavaScript When the project calls for it, I'm comfortable working in Laravel, Python, Ruby on Rails, .NET, and WordPress or Drupal CMS builds. I also step into a CTO or technical project manager role on larger engagements, owning the roadmap, architecture decisions, and team execution while keeping timelines and budgets on track. Production Essentials I Handle Daily Authentication & role-based access · Stripe payments · AI features with OpenAI · Real-time data with WebSockets · Third-party API integrations · Shopify custom development · Database migrations · Performance optimization · Scalable deployment on AWS Why Clients Work With Me Again My process is structured and transparent. I communicate proactively, flag risks early, and don't disappear mid-project. What I ship is maintainable, documented, and built to grow with your business, not just to clear a milestone. 📩 Let's Talk Send me a message describing what you're building. I'll tell you honestly whether I'm the right fit, and if I am, we'll move fast. — Zaeem

With 9+ years of experience building production-grade web applications, I develop scalable, high-performance frontend systems — from complex dashboards to polished SaaS platforms. I don’t just build interfaces — I take full ownership of the frontend. From architecture and business logic to testing and performance, I deliver reliable, maintainable, and production-ready solutions. What I bring: End-to-end frontend development (from scratch to production) Complex dashboards & data-heavy applications Strong expertise in React, Next.js, TypeScript Clean architecture & scalable business logic Unit & integration testing (Jest, React Testing Library) API integration & backend collaboration Performance optimization & code quality UI systems with Tailwind, Material UI, Styled Components Ability to lead projects and make technical decisions I’m comfortable handling everything on the frontend side — including complex logic, edge cases, testing, and long-term maintainability — so you don’t have to worry about stability or scalability. ✨ Open to long-term collaboration and high-impact projects.

Do you need a modern, responsive, and easy-to-manage website? I’m a Frontend Developer specializing in React, Next.js, and TailwindCSS, focused on building clean, fast, and user-friendly interfaces. With experience across JavaScript, TypeScript, Node.js, Express, Sequelize, MySQL, PostgreSQL, and Firebase, I handle projects from concept to deployment, ensuring smooth communication and reliable results. 🔹 What I Offer • Frontend development with React, Next.js, and Tailwind CSS • Integration with Firebase for authentication and real-time data • Backend setup using Node.js, Express, and PostgreSQL • Figma to responsive UI conversion • Code refactoring, bug fixing, and project maintenance 🌟 Why Work With Me • I take full ownership of every project – from architecture to deployment • Clear, consistent communication at every stage • Focus on usability, scalability, and long-term maintainability • Always committed to delivering real value, not just finished code Let’s collaborate to bring your ideas to life – whether you need a custom web app, a portfolio site, or help improving your current project. 💬 Send me a message, and let’s start! 🔑 Tech Stack: React, Next.js, JavaScript, TypeScript, Tailwind CSS, Node.js, Express, PostgreSQL, Firebase, HTML, CSS, WordPress, Figma, Responsive Design, Vercel, Render, neon.tech, SanityCMS, Git, GitHub

Looking for a developer who works as a Vibe Coder or AI-Assisted Engineer to reduce development cost, shorten delivery timelines, and solve common challenges in AI-generated code such as hallucinations, inconsistent architecture, and production instability? That’s exactly what I do. I’m Imtiaz, a Top Rated Plus AI & Full Stack Engineer, Top 3% on Upwork with 6 years of experience building SaaS platforms, AI-powered applications, automation systems, and startup MVPs for founders and growing businesses. I specialize in modern AI-assisted development workflows where tools like Cursor, Claude, Replit, Lovable, OpenAI, Make, Zapier, and n8n are used to accelerate development while still applying real engineering principles to ensure scalability, maintainability, and production readiness. The goal is not just speed with AI. The goal is building products correctly so they can survive real users, real scale, and real business growth beyond the prototype stage. Over the years, I’ve delivered 40+ SaaS products, MVPs, and AI-powered systems, helping startups and businesses turn ideas into fully working, production-ready products with significantly reduced development time and cost. 𝗪𝗵𝗮𝘁 𝗜 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂 𝗯𝘂𝗶𝗹𝗱: ✔ AI SaaS Platforms ✔ AI Agents & AI Assistants ✔ Startup MVPs idea to production ✔ Workflow Automation Systems ✔ Internal Business Tools & Dashboards ✔ CRM & Lead Management Systems ✔ Multi-Tenant SaaS Applications ✔ API-Driven Scalable Web Applications ✔ Multi-Tenant SaaS Applications ✔ Custom Web Applications 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸 & 𝗔𝗜 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗪𝗼𝗿𝗸𝗳𝗹𝗼𝘄: ➡ Frontend: React.js, Next.js (App Router), TypeScript, JavaScript, Tailwind CSS, ShadCN UI, Ant Design ➡ Backend: Node.js, Express.js, Firebase, Supabase ➡ AI Development Tools: Cursor, Claude Code, OpenAI GitHub Copilot, Replit, Lovable, Bolt, Base44 ➡ Automation & Workflows: n8n, Zapier, Make, GoHighLevel (GHL) ➡ DevOps & Deployment: Vercel, Netlify, GitHub, CI/CD workflows ➡ SaaS & Payments: Stripe, Paddle ➡ UI → Production: Figma to fully responsive, production-ready frontend implementation 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲: Many founders work with me as a fractional CTO, getting senior-level technical guidance, architecture planning, and hands-on execution without the cost of hiring a full-time engineering team. Because I don’t just use AI tools. 𝐈 𝐤𝐧𝐨𝐰 𝐡𝐨𝐰 𝐭𝐨: - Turn AI-generated code into production-grade architecture - Fix inconsistent or unstable AI outputs - Design scalable backend systems from day one - Reduce unnecessary development cost and time - Ship faster without creating long-term technical debt If you're building a SaaS product, AI application, automation system, or startup MVP and want someone who can combine AI speed with real engineering discipline, 𝗹𝗲𝘁’𝘀 𝗰𝗼𝗻𝗻𝗲𝗰𝘁. Send me your 𝗶𝗱𝗲𝗮, and I’ll help you turn it into a working product. 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀 ( for better profile visibility ) Fractional CTO | AI Product Engineer | AI SaaS Developer | Full Stack Developer | Senior Full Stack Engineer | Startup MVP Developer | SaaS Developer | Custom Software Developer | Custom Web Application Developer | Custom SaaS Development | AI Agent Developer | AI Assistant Developer React Developer | Next.js Developer | Node.js Developer | TypeScript Developer | JavaScript Developer | Frontend Developer | Backend Developer | API Developer | Dashboard Developer | Admin Panel Developer AI Development | AI Integration | OpenAI Developer | Claude AI Developer | AI Workflow Automation | Business Process Automation | AI-Powered Applications | AI SaaS Products | Workflow Automation | AI Agents | RAG Applications Cursor AI Developer | Claude Code | Replit Developer | Lovable Developer | V0 Developer | Base44 Developer | Bolt.new | AI-Assisted Development | Vibe Coding | Rapid MVP Development n8n Developer | Zapier Developer | Make Developer | GoHighLevel (GHL) Developer | CRM Development | Internal Tools Development | Business Management Systems React.js | Next.js | Node.js | Express.js | Supabase | Firebase | PostgreSQL | MongoDB | Tailwind CSS | SaaS Architecture | Multi-Tenant SaaS | Scalable Web Applications

🏆 Top Rated Plus ✉️ 24/7 Response. ☎️ Always available for Interview and attend call. ✅ 6+ years of experience ✋ Hi,I am Professional and Experienced Fullstack Developer With (6+ years of experience) with Expertise in Jamstack | Gatsby | Next js | Astro (Astro js) | Groq-js | NetlifyCMS | Sanity io | Storyblook | Tailwind CSS | SCSS | ReactJS | Graphql | HeadlessCMS | Typescript | Html5 | CSS3 | Wordpress | Shopify and Woocommerce to develop the right way With a keen interest in Web applications and a sharp eye for the latest trends performance-driven, accessible, easily maintainable, and scalable. My first priority is to provide 100% satisfaction to my client and good quality work.Entrepreneurship mindset allows me to think deeply about the business goals my client wants to achieve with their marketing website; often, I take on the role of a consultant to help them with it. Drawing from a strong technical background and in-depth domain-specific knowledge in various technologies like: ✅Experienced in JavaScript and Typescript ✅Proficient in HTML5/CSS3, Styled-Components and frameworks/libraries such as Tailwind CSS. ✅Competent in React, Next.js, Headless, WordPress ,GatsbyJS,GraphQL (Apollo/RTK) and Astro ✅Proficient Deploy and CDN with Vercel and Netlify ✅Proficient in working with content management systems(CMS) like Contentful, Sanity io and WordPress. SOUND LIKE A GOOD FIT? If you’re looking for a dedicated developer who can bring your vision to life and drive results for your business,I’m here to help.Feel free to reach out to discuss your upcoming projects or requirements. I look forward to the opportunity to collaborate with you and achieve success together.

Need a Front-End Developer who builds clean, scalable, high-performance apps? With 4+ years of experience in React.js, Next.js, and Redux Toolkit, I craft responsive UIs and write maintainable code that performs. 🔧 What I Do Best: ⚛️ Build modern, responsive UIs with React and Next.js 🎨 Convert Figma/XD/PSD designs into pixel-perfect layouts 🎯 Style using Tailwind CSS, SCSS, and BEM methodology 🔁 Integrate REST APIs and manage complex state with Redux Toolkit 🚀 Optimize performance and ensure smooth user experiences 🤝 Collaborate with teams to deliver on time and at high quality 🛠️ Tech Stack & Tools: 💻 React.js, Next.js, Redux, Redux Toolkit, MobX, Effector 🎨 Tailwind CSS, SCSS, BEM, Styled-Components, TSS-React, 🔌 REST API Integration 🧠 JavaScript (ES6+), TypeScript 🧰 Webpack, Vite, Git ✅ Why Work With Me: 📐 Detail-oriented and clean code advocate 🗣️ Strong communication and collaborative mindset ⏱️ Reliable, deadline-driven, and always aiming for excellence Let’s build something fast, clean, and user-focused. Ready when you are. ⭐️⭐️⭐️⭐️⭐️ 5.0 | Feb 10, 2025 - Feb 25, 2025 "Karen did an outstanding job! The UI was pixel-perfect, just as we envisioned, and he delivered everything incredibly fast. His attention to detail, clean code, and clear communication made the entire process smooth and efficient. Highly recommend!" ⭐️⭐️⭐️⭐️⭐️ 5.0 | Mar 7, 2025 - Apr 20, 2025 "Exceptional work! Karen was thorough, detail-oriented, and consistently delivered high-quality results. Communication was smooth and professional throughout the project. Everything was completed exactly as requested - couldn’t be happier with the outcome!"

🏆 Top 10% – Top Rated 👨‍💻 7+ Years Senior Shopify Developer & Frontend Engineer 💰 $20K+ Earnings ⏰ 700+ Hours I don't just customize themes; I build fast, conversion-ready Shopify stores that work flawlessly across every device. From small bug fixes to full custom theme sections and landing pages, I help store owners turn their Shopify storefront into something that actually performs and sells. My expertise lies in Liquid, CSS/SCSS, TailwindCSS, JavaScript, Alpine.js, and the Shopify theme architecture, and I stay current with Shopify's latest features to ensure your store is fast, stable, and SEO-friendly ✅ What I Do Best 🔹Convert Figma designs into pixel-perfect Shopify stores, pages, and sections. 🔹Build custom landing pages designed to convert visitors into customers. 🔹Build custom theme sections tailored to your store's design and brand. 🔹Write clean, efficient Liquid code for dynamic, reusable theme components. 🔹Fix bugs, broken layouts, and theme errors quickly and reliably. 🔹Resolve mobile responsiveness issues so your store looks perfect on every screen. 🔹Customize existing/premium themes (Dawn, Horizon, Impulse, Prestige, Shrine, and others) without breaking core functionality. 🔹Optimize site speed and ensure smooth performance across browsers and devices. 💎 Why Clients Choose Me 🔹Deliver clean, reusable, and scalable Liquid code that's easy to maintain. 🔹Strong communication, fast turnaround, and clear updates throughout the project. 🔹Careful, non-destructive edits that protect your existing store setup. 🔹Skilled at translating design files (Figma/XD) into fully functional Shopify store/pages. Before making any changes, I duplicate your live theme so your store stays safe and unaffected throughout the process. I then work within that duplicate theme, using version control and structured workflows to keep changes safe and trackable. Whether you need a Figma design turned into a Shopify store/landing page, a quick bug fix, or a custom section built from scratch, I deliver on time, on budget, with zero surprises. If you're looking for a Shopify developer who combines technical precision, attention to detail, and clear communication, let's talk about your project and make it happen. 🤝 Last Updated: Thursday, March 03, 2026 🔥 🔍Keyword/Tags: Shopify Developer | Shopify Website Developer | Shopify Expert | Shopify Specialist | Shopify Plus Developer | Shopify Ecommerce Website | Shopify Ecommerce Store | Shopify Store Development | Shopify Store Setup | Shopify Store Setup Expert | Shopify Store Builder | Shopify Website Builder | Shopify Website Customization | Shopify Store Customization | Shopify Theme Customization | Shopify Theme Developer | Custom Shopify Theme | Shopify Custom Website | Shopify Website Redesign | Shopify Store Redesign | Shopify Online Store | Figma To Shopify | Figma To Shopify Developer | Figma To Shopify Conversion | Shopify Store Rebuild | Shopify Migration | WooCommerce To Shopify | Shopify Rebuild | Shopify Website Rebuild | Shopify Designer | Shopify Website Designer | Shopify Web Designer | Shopify Website Design | Shopify Store Design | Shopify Store Designer | Shopify Ecommerce Design | Shopify Ecommerce Developer | Shopify Landing Page Design | Shopify Homepage Design | Shopify Store Design Services | Ecommerce Website Developer | Shopify Theme Designer | Shopify Website Setup | Shopify Liquid Developer | Optimize Shopify Theme | Shopify Theme Support | Shopify Theme Setup | Modify Shopify Theme

👑 Top Rated Plus | 💰 $100K+ Earned | 💼 160+ Jobs Completed | ⏱️ 6,000+ Hours Worked. Build fast, SEO-friendly websites with WordPress, Strapi, Sanity, Payload, and Next.js. I help businesses launch scalable, high-performance websites that load quickly, rank better, and convert more effectively. ✅ Clients hire me to: ⚪ Build fast, SEO-friendly websites with WordPress, Strapi, Sanity, Payload, Storyblok, and Next.js. ⚪ Integrate GraphQL APIs for dynamic content fetching and ultra-smooth UI ⚪ Develop WooCommerce stores that are modern, scalable, and easy to manage ⚪ Create custom Gutenberg blocks and ACF-powered templates ⚪ Convert designs from Figma, XD, or Sketch to fully responsive websites ⚪ Migrate legacy WordPress or other CMS sites (Strapi, Sanity, Payload) to modern Next.js headless architecture. ⚪ Deliver SSG/SSR-ready builds for optimal performance and SEO 💡 How I deliver value: ⬜ Use headless CMS platforms like WordPress, Strapi, Sanity, and Payload — giving non-technical users easy content control with a modern, high-performance frontend. ⬜ Replace traditional REST APIs with GraphQL for better performance, flexibility, and developer experience ⬜ Create fully responsive, mobile-optimized UIs using Tailwind CSS, Bootstrap, or Material Design ⬜ Implement SEO best practices: proper markup, meta handling, sitemap setup, Open Graph integration, etc. ⬜ Architect clean, scalable codebases with TypeScript, React, and modern tooling 🔌 Technologies I specialize in: 🦋 Frontend: React, Next.js, TypeScript, JavaScript, Tailwind, Bootstrap, Headless UI, Framer Motion ⚒️ Backend / CMS: WordPress, Headless WordPress, ACF, Gutenberg, WooCommerce, WPGraphQL, WPML, SEO plugins (Yoast, Rank Math) 🗝️ API & Integration: GraphQL, WPGraphQL, REST (limited), SSR, SSG, Webhooks, Custom Post Types, Multisite 🧰 Tooling: Git, Yarn, Vite, Webpack, PostCSS, CI/CD (basic), Cloudflare, Vercel, Netlify, Firebase, Supabase Design-to-Code: Figma to Next.js, Adobe XD to React, Sketch to HTML/CSS 🏆 Why clients love working with me: ⬜ I communicate proactively, meet deadlines, and deliver maintainable code ⬜ I deeply understand both the developer side and the WordPress editor side ⬜ I make sure your team or clients can easily manage everything without touching code ⬜ I’ve worked on 148+ projects — from startups to agencies to eCommerce brands 📁 Example Project Types I handle: ⬜ Headless WooCommerce storefronts using Next.js & GraphQL ⬜ High-performance marketing sites powered by Headless CMS (WordPress, Strapi, Sanity, Payload) as backend ⬜ Custom Gutenberg block sets for advanced layout control ⬜ Blog platforms with fast SSG/SSR using GraphQL and Next.js ⬜ Full site rebuilds from monolithic WordPress to decoupled architecture ⬜ Frontend migration from Vue/Angular to React or Next.js 📦 Final Deliverables Include: 🍬 Fully responsive website built with best practices 🍬 Clean, well-structured code with comments and documentation 🍬 CMS setup tailored to your content structure (ACF, Custom Post Types) 🍬 SEO optimizations baked in (metadata, sitemap, fast load) 🍬 Free post-launch support (short-term minor fixes) 🧠 Keywords: Next.js developer, Headless WordPress developer, Headless WordPress, Headless WP, WordPress Headless, Headless with Nextjs, Nextjs Headless, Nextjs Headless with WordPress, Graphql API, WordPress Headless CMS, WordPress Backend, WooCommerce expert, WordPress frontend, React WordPress integration, WPGraphQL, GraphQL WordPress API, Gutenberg block developer, Figma to Next.js, Next.js with ACF, TypeScript developer, frontend API developer, SSR, SSG, SEO Next.js, modern web development, WordPress to Next.js migration, WooCommerce frontend, API-based CMS developer, Tailwind CSS, JAMstack developer, WebStudio frontend, Strapi developer, Sanity CMS developer, Payload CMS, Headless CMS developer, Next.js with Strapi, Next.js with Sanity, Next.js with Payload, JAMstack CMS