Muhammad Umair B.

I build and scale mobile apps, web platforms, and AI-powered products from idea to production. If you’re building a product and need someone who can handle more than just the UI, I can take ownership of the complete technical side — mobile apps, React.js websites, backend systems, APIs, AI integrations, performance, security, and production deployment. With 4+ years of experience, I’ve built products for iOS, Android, and the web across AI, fitness, productivity, social, booking, and real-time experiences. What I build Mobile Applications React Native, Expo, TypeScript, iOS & Android Web Applications & Websites React.js, modern frontend architecture, responsive interfaces, dashboards, and business platforms Backend & Cloud Node.js, Supabase, Firebase, REST APIs, authentication, real-time systems, and scalable data architecture AI-Powered Products OpenAI, LLMs, AI agents, RAG, Voice AI, Speech-to-Text, Text-to-Speech, and AI-driven workflows Product Features Payments, subscriptions, authentication, notifications, real-time communication, offline functionality, analytics, and third-party integrations Selected Work RehearsalMaster.ai AI-powered application with OpenAI, Speech-to-Text, Text-to-Speech, audio recording, and contextual AI interactions. CoachSisu AI AI fitness platform with personalized training plans, real-time voice coaching, activity tracking, subscriptions, and Supabase. Prayblock Productivity platform with offline-first functionality, real-time synchronization, push notifications, analytics, and a Node.js backend. I focus on building software that is maintainable, scalable, secure, and ready for real users — not simply getting a prototype to work. I also use modern AI development tools such as Claude Code, Cursor, and ChatGPT to accelerate development while maintaining strong standards for architecture, testing, security, and code quality. Whether you need to build a new mobile app, develop a React.js website, create a full-stack platform, integrate AI, or improve an existing product, I can help take it from concept to production. Best Regards, Umair Butt