Gurwinder S.

Senior Flutter & AI Mobile App Developer | Firebase, iOS, Android

Senior Flutter & Mobile App Developer with 11+ years of experience and 4,000+ Upwork hours. I build production-ready Flutter, iOS, and Android apps using Firebase, AI/OpenAI, Node.js, and on-device AI. I help startups, founders, and product teams build scalable mobile applications, launch MVPs, integrate AI features, modernize existing apps, and solve complex Flutter, Firebase, and native mobile challenges. My primary expertise is Flutter and mobile application development, backed by extensive experience with native Android, iOS, Firebase, backend development, real-time systems, and AI integrations. 📱 Flutter & Mobile App Development I build reliable, scalable, and production-ready mobile applications for iOS and Android. My expertise includes: Flutter & Dart Native Android — Kotlin & Java Native iOS — Swift React Native Responsive and adaptive UI Clean and scalable app architecture State management Native platform integrations Deep linking Push notifications Performance optimization Debugging and crash resolution Google Play & App Store deployment 🤖 AI-Powered Mobile Apps I have hands-on experience integrating cloud-based and on-device AI into production mobile applications. My AI experience includes: OpenAI API integrations AI assistants and chat experiences On-device AI and local LLMs Speech-to-text Whisper / whisper.cpp AI summarization Semantic search Embeddings and vector search Intelligent automation Image and media intelligence Offline AI experiences I can also integrate AI features into existing Flutter applications without unnecessarily complicating the architecture. 🔥 Firebase I work extensively with Firebase, including: Firebase Authentication Cloud Firestore Realtime Database Cloud Functions Firebase Storage Firebase Cloud Messaging Crashlytics Analytics Remote Config App Check ⚙️ Backend & API Development I can also handle the backend and API side of mobile applications. Technologies include: Node.js PHP Laravel REST APIs PostgreSQL MySQL Firebase Cloud Functions Authentication & authorization Webhooks Payment integrations Third-party APIs Real-time communication 🚀 Projects I Can Help With Flutter iOS & Android apps AI-powered mobile applications Startup MVPs Existing Flutter app development Firebase applications API integrations Real-time chat Audio/video calling Live streaming Speech-to-text applications Offline-first applications Subscription-based apps Stripe & payment integrations Maps & location-based applications Push notification systems App performance optimization Legacy app modernization 🛠️ Existing App Development & Troubleshooting Already have an application? I can help with: Architecture review Complex bug fixing Code quality improvements Technical debt reduction Flutter performance optimization Dependency upgrades Android & iOS platform issues Firebase architecture improvements New feature development Production releases App Store & Play Store deployment I focus on clean, maintainable, and scalable code rather than simply getting a feature working. Why Work With Me? ✓ 11+ years of software development experience ✓ 4,000+ Upwork hours ✓ Top Rated Plus ✓ 100% Job Success Score ✓ Strong Flutter & native mobile expertise ✓ AI and on-device AI experience ✓ Firebase & backend development experience ✓ Production application experience ✓ Comfortable working with existing codebases ✓ Long-term development and maintenance support If you're looking for an experienced Flutter Developer, Mobile App Developer, or AI Mobile App Engineer who can understand both your product and the technical architecture behind it, feel free to send me a message. I'd be happy to discuss your project.