Muhammad R.

I build production-grade, scalable web apps that clients keep coming back for — from AI-powered RAG chatbots to real-time multiplayer platforms and no-code data tools. 11 jobs delivered on Upwork with 100% Job Success, repeat clients, and live apps in production today. Live production apps I've built: • Skygenic — Senior engineer on a bioinformatics SaaS platform: architected a Vite + TypeScript micro-frontend monorepo, built a Blockly no-code pipeline builder, a real-time data-visualization system, and an AI chat assistant. • CheckersVIP — Real-time multiplayer Checkers platform (Nextjs, Fastify, Socketio, Redis, PostgreSQL/Prisma). • AskRudy — Multilingual RAG document chatbot with vision: screenshot → instant translation & Q&A (Next.js, Vercel AI SDK, LangChain, OpenAI multimodal, Firebase, Stripe). What I do well: ✓ Modernize large legacy codebases — migrated React/Redux → TypeScript + RTK Query for a 100% type-safe API layer, monorepo/micro-frontend architecture ✓ Real-time systems — WebSockets, Socketio, Redis, streaming data ✓ AI-first products — RAG pipelines, LangChain/LangGraph, OpenAI GPT-4o & Vision ✓ Backend & infra — Nodejs (Fastify/Express), Python, GCS file streaming, Docker, pgvector, Neo4j, CI/CD Core stack (battle-tested daily): • Frontend: React, Nextjs, TypeScript, Redux Toolkit + RTK Query, React Query, shadcn/ui, Tailwind, Radix, Zod • Backend: Nodejs (Express/Fastify), Python (Django/Flask), GraphQL, Prisma, Socketio, REST API design • AI/ML: LangChain, LangGraph, RAG pipelines, OpenAI (GPT-4o, Vision), Vercel AI SDK • Databases: PostgreSQL, MySQL, MongoDB, Redis, pgvector, Neo4j • DevOps/Cloud: Docker, AWS, GCP, Firebase, GitHub Actions, Nginx, Linux What you get: ✅ Clean, well-documented, production-ready code following current best practices ✅ End-to-end ownership: planning → architecture → development → deployment → post-launch support ✅ Pixel-perfect, responsive, accessible UIs ✅ Clear, proactive communication with daily updates on request I specialize in AI-first products, real-time applications, and large-scale refactors/modernizations. If you need someone who can jump into a complex codebase, ship fast, and leave it measurably better — let's talk. 📌 Available for long-term contracts, retainers, one-off projects, and code reviews/consulting.