Muhammad Hamza R.

I build complete, production-ready products across web and mobile — SaaS platforms, AI-powered apps, two-sided marketplaces, and cross-platform mobile apps. With 5+ years of experience and 10+ full-stack products shipped to production, 50+ mobile applications - I take full ownership from architecture to deployment. Available for long-term contracts. What I Build Web Platforms (Next.js / React): - Full-stack SaaS platforms with dashboards, billing, and user management - AI-powered web apps using OpenAI and Anthropic Claude - Two-sided marketplaces with real-time quoting, chat, and payments - CRM systems, admin panels, and internal tools - REST APIs with FastAPI (Python) and Node.js Mobile Apps (React Native / Expo): - iOS and Android apps published to App Store and Google Play - AI-powered mobile apps with OpenAI and Claude integration - Real-time features, push notifications, in-app purchases - Authentication, deep-linking, maps, camera, OTA updates Why I Am Different Most developers do either web or mobile. I do both at a senior level. I have shipped Next.js SaaS platforms with dual frontends, FastAPI backends, and PostgreSQL — and I have published 50+ mobile apps to the App Store and Google Play. Beyond that, I build real AI into products — classification pipelines, conversational AI companions, and automated research workflows using Claude and OpenAI that solve actual business problems. One developer. Full ownership. No handoffs. Track Record: - 10+ full-stack SaaS products shipped to production - 50+ mobile apps published on App Store and Google Play - 4.5 years as Senior Software Engineer before going independent - AI-integrated products using Claude and OpenAI in production - Payment systems: Stripe, RevenueCat, Paddle, In-App Purchase Core Stack Web: Next.js, React, TypeScript, Tailwind CSS, shadcn/ui Mobile: React Native, Expo, Expo Router, EAS Build, TypeScript Backend: FastAPI, Node.js, PostgreSQL, SQLAlchemy AI: Anthropic Claude, OpenAI API, prompt engineering, AI workflows Payments: Stripe, RevenueCat, Paddle, In-App Purchase, subscriptions Real-Time: WebSockets, SocketIO, Firebase Realtime DevOps: Docker, Vercel, Railway, CI/CD If you are building something real that needs to scale and generate revenue, let us talk.