Musawir R.

Full Stack Developer | React Native, iOS & Android Apps | AI Engineer

Full stack developer and React Native mobile app developer. I build iOS and Android apps, Next.js and Supabase SaaS platforms, Strong typescripts, AI Engineer and AI systems (RAG pipelines, LLM agents) that cite their sources. Two apps live on the App Store and Google Play. "Switching developers now would be cheating." — a founder who hired me for one small security review, and who now trusts me with her payments, her platform and her mobile app. Most of my work starts the same way. Somebody has a product idea and needs it turned into a working MVP, and the first job is deciding which third of it to build. WHAT I'VE BUILT - Readiary — is a React Native app I designed and built end to end, live on the App Store and Google Play, on a multi-tenant Supabase backend with cross-device sync and subscription gating. The client hired me back for the next phase. - ETnowe — US marketplace, two React Native apps live on the App Store, plus the backend behind them. - Lisi.no — full-stack marketplace serving 100+ car dealerships in Norway. Thousands of listings, real-time filtering, dealers managing their own inventory. - VoxAnima — production RAG assistant grounded in a real document corpus, citations on every claim, with an adversarial eval suite that caught it inventing quotations before launch. - The Framework — multi-tenant SaaS with row-level security on every table, so an application bug still cannot leak one customer's data into another's view. - Replyte — AI speed-to-lead agent that answers, qualifies and follows up automatically. MOBILE APP DEVELOPMENT React Native and Expo development for iOS and Android from one codebase: native modules, offline-first sync, push notifications, in-app purchases and subscriptions with RevenueCat and Stripe, deep linking, camera and media handling, App Store and Google Play submission including closed testing. I design as well as build, so interface decisions survive the trip into production. WEB AND FULL STACK DEVELOPMENT Next.js and React web apps in TypeScript: marketplaces, dashboards, admin panels, customer portals, SaaS platforms, role-based access control, billing and subscriptions, real-time features, REST and GraphQL APIs. AI AND AUTOMATION RAG pipelines, AI agents and multi-agent workflows, LLM integration with Claude, OpenAI and Gemini, vector search with pgvector, chatbots, document processing, and workflow automation with n8n. Citations enforced at the output layer, with an abstain path so the system stops instead of guessing. BACKEND AND SECURITY Multi-tenant architecture with row-level security enforced in Postgres, append-only audit logs, authentication and OAuth, webhooks, payment systems, idempotent writes, and failure recovery. STACK React Native, Expo, Next.js, React, TypeScript, Node.js, Python, Supabase, PostgreSQL, pgvector, Firebase, Stripe, RevenueCat, Twilio, n8n, Claude API, OpenAI API, Gemini API, AWS, Vercel, Docker. HOW I WORK We agree on the outcome and a timeline you can hold me to. Weekly Loom updates through the build. At launch, a documented product with 30 days of fixes included. I work US Eastern hours and reply the same day. Send me the spec and I'll tell you what I'd cut before I tell you what I'd build.