Gurvinder S.

🔥 Full Stack Developer • MVP to Production Ready Applications • MERN Developer • React/Next.js Developer • Replit/Lovable/Claude Code Specialist 🔥 Most of my clients now arrive with 50–70% of an app already built using Claude Code, Replit, Lovable, or Bolt.new and need someone who can turn that prototype into something real users (and their data) can actually rely on. I'm a Senior Full-Stack Developer with 12+ years of experience, and over the past year that's become a core part of my work: auditing AI-generated codebases, fixing what's fragile, and shipping production-grade applications on React, Next.js, Node.js, TypeScript, and Supabase. AI tools get an app to 𝐥𝐨𝐨𝐤𝐬 𝐥𝐢𝐤𝐞 𝐢𝐭 𝐰𝐨𝐫𝐤𝐬, not to production-safe. I close security gaps, harden Auth and RLS policies, fix database performance, set up real CI/CD, and wire up payments and APIs correctly. Done across SaaS, eCommerce, healthcare, and education with an eye on architecture that won't need another rescue in six months. 𝗥𝗲𝗰𝗲𝗻𝘁 𝗔𝗜 𝗔𝗽𝗽 𝗥𝗲𝘀𝗰𝘂𝗲𝘀: 🔹 𝗝𝗲𝘁𝘇𝘁𝗽𝗮𝘁 (𝗟𝗼𝘃𝗮𝗯𝗹𝗲) - German HR/relocation platform. Closed security gaps, rebuilt RLS policies in Supabase, migrated off Lovable to dedicated hosting with real CI/CD 🔹 𝗔𝗿𝘁 𝗜𝗻𝗳𝗼𝗿𝗺𝗮𝘁𝗶𝗼𝗻 𝗖𝗲𝗻𝘁𝗲𝗿 (𝗟𝗼𝘃𝗮𝗯𝗹𝗲) - Rochester, NY creative-community directory. Same security/auth hardening, plus the infrastructure migration off Lovable 🔹 𝗘𝘀𝘀𝗮𝘆𝗚𝘂𝗮𝗿𝗱 (𝗥𝗲𝗽𝗹𝗶𝘁) - Essay platform for high school English departments with role-based access. Hardened auth, fixed rate limiting & error handling, stood up dev/prod environments with automated deployments 🔹𝗕𝗹𝘂𝘀𝗸𝘆𝗶 (𝗖𝗹𝗮𝘂𝗱𝗲 𝗖𝗼𝗱𝗲) - Platform to deliver personalized weekly briefings of curated academic research for Engineers. Set up background jobs for fetching Articles and preprints from OpenAlex, Gemini Pro integration for summarizing Articles and preprints from OpenAlex, and stood up dev/prod environments. 🔹𝗦𝗙𝗦𝗣 𝗠𝗲𝗻𝘂 𝗦𝘆𝘀𝘁𝗲𝗺 (𝗖𝗹𝗮𝘂𝗱𝗲 𝗖𝗼𝗱𝗲) - USDA summer meal-program menu planner. Built real-time menu compliance checking, cost analysis, PDF summaries, and vendor ordering, with role-based access hardened down to Postgres RLS. 🚀 𝗪𝗵𝗮𝘁 𝗜 𝗕𝗿𝗶𝗻𝗴 𝘁𝗼 𝘁𝗵𝗲 𝗧𝗮𝗯𝗹𝗲: 🔹 Full-Stack Development: React, Next.js, Node.js, TypeScript, Supabase/PostgreSQL, MongoDB end-to-end, production-grade builds 🔹 Security & Auth Hardening: RLS policies, proper access control, rate limiting, and closing the gaps AI tools tend to leave open 🔹 Scalable Architecture: From prototype to systems that hold up under real traffic, whether monolith or microservices 🔹 API & Third-Party Integrations: Payments, CRMs, ERPs, and custom REST/GraphQL APIs, wired up securely 🔹 Performance Optimization: Code splitting, SSR/SSG, caching, and bundle tuning for fast, responsive apps 🔥 ROLES I TAKE ON (12+ YEARS EXPERIENCE) ✔ Full Stack Developer / Full Stack Engineer / Full Stack React Developer – SaaS platforms (Angular/React + Node.js), 10+ years ✔ Frontend Developer / Front-End Developer – 50+ UI builds, 12+ years ✔ React Developer / React.js / ReactJS Developer ✔ Node.js / NodeJS Developer / Python Developer / Backend Developer – 30+ APIs, 1M+ requests/month, 8+ years ✔ Next.js Developer / NextJS Developer – 10+ SSR/SSG SaaS platforms, 5+ years ✔ AI-assisted Developer / Replit Developer / Lovable Developer 🏭 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗜’𝘃𝗲 𝗪𝗼𝗿𝗸𝗲𝗱 𝗪𝗶𝘁𝗵 ✔️ SaaS & B2B Platforms ✔️ eCommerce ✔️ Healthcare ✔️ Education ✔️ Startups & Enterprises Whether you’re building a product from scratch, scaling an existing platform, or improving performance, I bring both technical expertise and business understanding to deliver real results Full Stack Developer | JavaScript | React Developer | Next.js Developer | Claude Code | TypeScript | SaaS Developer | Next.js Developer | Node.js | Backend Developer | Replit | Lovable | Supabase | Full Stack React Developer | Replit Developer | Lovable Developer | API Integration | AI-assisted Full Stack Developer | SaaS Developer | Microservices | Full Stack Developer | AWS | Scalable Architecture | MVP Development | Replit Developer