Ali H.

Need a new mobile app built from scratch, an existing app modernized, or an experienced developer to take ownership of your mobile product? I'm a Senior Mobile App Developer specialising in Native Android with Kotlin & Jetpack Compose, Kotlin Multiplatform (KMP), Flutter and React Native. With 10+ years of professional mobile development experience and $50K+ earned across 80+ Upwork projects, I've worked across the full mobile development lifecycle — from architecture and UI development to APIs, testing, deployment, maintenance, and long-term product improvements. MOBILE DEVELOPMENT EXPERTISE Native Android Development • Kotlin & Java • Jetpack Compose • Android SDK & Android Studio • Coroutines & Flow • MVVM / Clean Architecture • Room / SQLite • Dependency Injection • Background services, notifications & platform APIs • Performance optimization & legacy Android modernization Kotlin Multiplatform (KMP) • Shared Kotlin business logic across platforms • Kotlin Multiplatform architecture • Android-first KMP development • Cross-platform networking, data & domain layers • Modern Kotlin codebases Flutter Development • Flutter & Dart • Android & iOS applications • Riverpod, BLoC, Provider & GetX • Clean Architecture & MVVM • Responsive & adaptive UI • Offline-first applications • Existing Flutter app maintenance & modernization React Native Development • React Native & TypeScript • Expo • Redux & Zustand • API integrations • Existing app maintenance & feature development • Android & iOS deployment AI INTEGRATION I integrate modern AI capabilities into new and existing mobile applications using: • OpenAI / ChatGPT APIs • Claude API • Google Gemini • AI chat & assistant experiences • AI-powered content & productivity features • AI integration into existing mobile applications My focus is on integrating AI where it provides useful functionality while keeping the underlying mobile application reliable, maintainable, and production-ready. BACKEND, APIs & INTEGRATIONS • REST APIs • Firebase & Supabase • Authentication • Push notifications • Payments & subscriptions • In-app purchases • Google Maps & location services • Third-party SDK integrations • SQLite & offline storage • Real-time data & synchronization EXISTING APPS & LONG-TERM DEVELOPMENT You don't need to be starting from scratch. A large part of my work involves joining existing projects to: • Build new features • Fix bugs & crashes • Modernize legacy Android applications • Refactor existing Flutter, Android & React Native code • Improve architecture & maintainability • Upgrade SDKs & dependencies • Improve application performance • Prepare & publish App Store and Google Play releases • Provide ongoing development & maintenance WHY WORK WITH ME? I focus on clean, maintainable engineering rather than simply making a feature work today and leaving technical problems for later. I can join an existing codebase or take ownership of a new mobile application from planning through development, testing, deployment, and ongoing improvements. Whether you're building a Flutter application, modernizing a native Android/Kotlin codebase, exploring Kotlin Multiplatform, maintaining a React Native product, or adding AI capabilities to an existing mobile app, I'd be happy to discuss your project. Send me your requirements, existing codebase details, or product idea, and let's determine the best way forward.