Rahul K.

I take AI-built prototypes and make them work in production real users, real data, real payments. If you built an MVP with Lovable, Bolt, v0, Cursor or Claude Code and it's now breaking on auth, payments, database performance or deployment, that is exactly the work I do. If you have a clear product vision and want one developer to own the full stack from architecture to launch, that's the other half of what I do. Recent work: - AI Prototype to Production (2026) — took a founder's AI app from prototype to a shipped React/Next.js + Node/TypeScript product with proper API layer, database design and deployment. Client: "an outstanding partner… handled the full stack." - AI-powered wellness platform — built from zero to 500+ users in 3 weeks: sentiment analysis, recommendation engine and a chatbot with memory. Client called the quality "exceptional." - Multi-tenant AI marketplace for a US startup — LangChain automation, RAG pipelines, tenant isolation, subscriptions. The CTO described me as "a highly skilled AI Senior Engineer." - Healthcare staffing platform — nurse registration, compliance tracking, client dashboards and Stripe payments. Also a HIPAA-compliant telehealth platform with WebRTC on AWS. - Stripe integration for a React + Node MVP — subscriptions, one-time payments and webhooks, delivered in two days. What I build and fix: - Production hardening of AI-generated code: authentication, RBAC, Stripe billing, error handling, security, database indexing and query performance, CI/CD and deployment - AI features that actually work: LLM chatbots with memory, RAG over your documents, AI agents, using the Claude API, OpenAI API and LangChain - Full-stack SaaS from scratch: React, Next.js, TypeScript, Node.js (NestJS/Express), FastAPI, PostgreSQL, Supabase, MongoDB, deployed on AWS, Vercel or Railway - Multi-tenant architecture with admin panels, clean REST APIs and Stripe Connect for marketplace payouts How I work: I use Claude Code and Cursor daily, but AI is a tool, not the architect. Anyone can generate code now; the skill is turning it into a system that handles failure and scales. I respond within 4 hours, communicate clearly, and don't need the same thing explained twice. Not a fit if you're shopping for the lowest rate or don't have a clear picture of what you're building. A great fit if you're a founder or product owner who wants to launch in weeks without technical debt that kills you later. Send me what you're building, your timeline and your budget. If I can deliver something great, you'll get a clear plan back. If I can't, I'll tell you why. Skills:- n8n , Automation , Artificial Intelligence , Enterprise SaaS , AI apps , Supabase , Postgre sql , Node.js , Nest.js , Express.js , FastAPI , Python , React.js , Next.js , Zapier , Railway , RAG