Bilal A.

Android & Mobile App Developer | Kotlin, Flutter, React Native & iOS

Need an experienced mobile app developer to build, upgrade, or fix your app? With 5+ years of hands-on experience, I specialize in native Android app development using Kotlin & Java — and have expanded into iOS, Flutter, React Native, and Node.js to deliver complete cross-platform and full-stack solutions. I work on both new apps and existing projects: bug fixing, performance optimization, and feature enhancements. ✅ Services I Provide: Native Android App Development using Kotlin & Java Cross-Platform App Development with Flutter & React Native iOS App Development Backend Development with Node.js, Express.js & MongoDB Jetpack Compose for modern UI/UX Fixing Bugs & Crashes in Existing Apps App Maintenance & Updates Firebase Integration: Analytics, Firestore, Realtime DB, AdMob In-App Purchases, Deep Linking, Push Notifications Video & Audio Streaming: ExoPlayer, WebRTC API Integration: REST, GraphQL, Retrofit, OkHttp Offline Functionality, Caching, Secure Payments 🛠 Projects I Work On: New custom Android, iOS, or cross-platform apps from scratch Existing apps that need fixes, updates, or performance improvements Apps rejected by Google Play for policy issues or outdated SDKs Feature integration into legacy codebases Full-stack projects needing both mobile app + backend API 🏆 Tools & Technologies: Kotlin, Java, Jetpack, Hilt, Dagger, Coroutines, Room Flutter, Dart, React Native, JavaScript Node.js, Express.js, MongoDB Kotlin Multiplatform Mobile (KMM) MVVM, MVP, Clean Architecture Firebase, Stripe, Razorpay, Agora, Twilio, Linphone SDK 📈 Let's turn your app idea into reality — or rescue and improve your existing one, on whichever platform fits your project best. 💬 Message me now and let's get started!