Hamza A.

Senior Flutter developer for iOS and Android apps. Over 9+ years in software engineering I've shipped production mobile products end to end, including a Flutter health and FinTech app that grew to 290,000+ registered users. Founders and product teams bring me in for three things: building an MVP the right way, scaling an app that has outgrown its architecture, or taking over a codebase that has become hard to change. I handle the architecture, backend, native integrations and store release myself. What I build: • Cross-platform Flutter apps for iOS and Android, from MVP to production • AI features with OpenAI and Gemini: AI chat, generated plans, image and food recognition • Health and fitness apps with Apple HealthKit, Health Connect and Garmin, including Google Fit to Health Connect migrations • Backends and APIs on Node.js, Django, GraphQL, Firebase and Google Cloud • Native iOS (Swift) and Android (Kotlin) plugins when Flutter needs them • Payments, subscriptions and in-app purchases • Admin dashboards and web apps in Next.js • CI/CD and App Store and Google Play releases Selected work: • Health and FinTech app, 290,000+ registered users: Flutter app, HealthKit and Health Connect sync, Gemini food scanning, Node.js and Django services • Freight marketplace through a $10M seed: led mobile on the founding team, six Flutter apps and a web portal on a GraphQL API • Smart fitness mirror featured in TIME's Best Inventions 2024: Flutter features, ML Kit pose detection and native Kotlin plugins • Ordering platform for a UK manufacturer: server-side trade pricing, hosted payments, a Next.js admin and 285 automated tests • AI wellness app I founded: Flutter, Django and a multi-agent OpenAI pipeline across mobile, web and admin • Mobile game whose iOS and Android apps and playable ads ship from one three.js codebase Why clients hire me: ✓ Top Rated with a 100% Job Success Score ✓ 9+ years in software engineering, 6+ years in Flutter ✓ I take ownership from architecture through release and production support ✓ Weekly test builds, so you see real progress on your own phone ✓ I'll say so when a simpler technical path gets you to the business goal faster My rate reflects senior, product-level ownership. I'm the right fit for long-term product work, technically demanding apps, and founders who want one engineer accountable for the whole build. Send me what you're building and where it's stuck. I'll reply with how I'd approach it and what it would take.