Jarnail S.

Is your app slow, buggy, or stuck halfway through development? I step in, find the real problem, and get your product working, from first build to production. I help startups and businesses turn ideas into reliable SaaS products, and turn messy codebases into ones they can scale. I'm a Top Rated Plus full-stack developer specialising in React, Next.js, Node.js, TypeScript, Python, and Django. ✅ $100K+ earned on Upwork ✅ 40+ completed jobs ✅ 100% Job Success Score ✅ 10+ years of development experience WHAT I CAN DO FOR YOU ✔ Build SaaS products and marketplaces end-to-end, from MVP to production ✔ Multi-tenant platforms with role-based access, dashboards, and billing ✔ Fix, refactor and speed up existing React/Next.js + Node.js +Python apps ✔ Add AI/LLM features, Stripe payments, API integrations and n8n automations to your product CORE STACK • Frontend: React, Next.js, Angular.js, TypeScript, Tailwind CSS, React Native • Backend: Node.js, Python, Django, Express, NestJS, REST/FAST APIs, GraphQL, WebSockets • Data: PostgreSQL, Prisma, MongoDB, Supabase, Firebase • Chrome extension development and internal business tools HOW I WORK I don't just take a ticket and start coding. I first understand the existing architecture, identify the real problem, and choose an implementation that won't create unnecessary technical debt. ✔ Daily progress updates on Upwork, so you always know where things stand ✔ Available during US and European mornings for calls and quick replies ✔ Ownership from development through deployment, not just handing over code Send me your codebase, requirements or product idea, and I'll tell you the best place to start.