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I will flutter firebase app microsoft google sign in flutterflow api ai integration app
Sam
About this gig
Are you building a Flutter app and need a developer who can handle the full stack Firebase authentication, FlutterFlow ecommerce, AI animation APIs, and cross-platform deployment?
You're in the right place. I specialize in building production-ready Flutter and FlutterFlow mobile applications with Firebase backend integration, published and live on both the Apple App Store and Google Play Store. Whether you need Microsoft or Google Sign-In added to an existing package, a full ecommerce platform for buyers, sellers, and drivers, or a confidential app powered by AI animation APIs I deliver clean, scalable, and maintainable code.
What I can build for you:
Firebase Authentication
- Microsoft Sign-In (OAuth 2.0 via Azure AD)
- Google Sign-In
- Email/Password, Phone OTP, Apple Sign-In
- Custom Flutter auth packages reusable across multiple apps
️ FlutterFlow Ecommerce Apps
- Multi-role apps: Buyers, Sellers, Drivers, Admins
- Firebase Firestore real-time database
- Admin panel with order, product, and user management
- Stripe / Paystack / Flutterwave payment integration
- Web, App Store & Play Store deployment
AI-Powered Flutter Apps
Integration with Runway, Luma, Kling, ElevenLabs.
Inbox Me Now
Get to know Sam
Sam
Flutter app developer, Backend development, React Native Mobile App
- FromUnited States
- Member sinceMay 2026
- Avg. response time1 hour
Languages
English, Dutch, German, Spanish
Flutter & Firebase developer with 4+ years building production-ready iOS and Android apps for clients worldwide.
I specialize in turning ideas into real, working apps with clean code, smooth UI, and zero guesswork on delivery.
What I bring to every project:
✅ Firebase Auth, Firestore & cloud storage
✅ GPT-4 AI chat integration
✅ Subscription paywalls (StoreKit/RevenueCat)
✅ App Store & Play Store submission
I don't just write code I solve problems. Every app I deliver is tested, documented, and built to scale.
Let's build something great.
FAQ
Can you add Microsoft Sign-In to an existing Flutter package that already uses Google Sign-In?
Yes, absolutely. This is one of my core specialties. I'll integrate Microsoft OAuth 2.0 via Azure Active Directory into your existing Firebase Auth flow without breaking your current Google Sign-In setup. The result is a clean, reusable package that supports both providers side by side.
Do you work with FlutterFlow or only pure Flutter code?
Both. I work fluently in FlutterFlow (including custom actions and Firebase integration) and in pure Flutter/Dart. If your project started in FlutterFlow, I can extend it. If you want clean Dart code from scratch, I can deliver that too.
My project is confidential. Can I trust you with the concept?
Yes. For confidential projects I sign a Non-Disclosure Agreement (NDA) and an Intellectual Property Assignment Agreement before any project details are shared. Your concept, name, and all project materials remain exclusively yours. I have worked on confidential mobile apps before and take this serio
Which AI animation APIs have you integrated into Flutter apps?
I have experience integrating REST-based AI APIs including Runway ML, Luma AI, Kling AI, and similar video/image generation services. I handle the API call logic, polling for async jobs, and native rendering of the output (video player, image display) inside the Flutter app.
Will you handle App Store and Google Play submission?
Yes. Full submission is included in the Standard and Premium packages. This covers code signing, provisioning profiles (iOS), signed AAB generation (Android), store listing setup, screenshots, and submission. I'll walk you through any Apple/Google account requirements on your end.
What is your tech stack and architecture approach?
Flutter + Dart, Firebase (Auth, Firestore, Storage, Functions), FlutterFlow, REST APIs, and clean architecture (MVVM or feature-first). I write code that is maintainable, scalable, and easy for you or another developer to pick up later.
Can you build for web as well as iOS and Android?
Yes. Flutter supports web and my Standard and Premium packages include web deployment where needed particularly relevant for ecommerce admin panels and multi-platform business apps.
What if I need something not listed here?
Just send me a message before ordering. I respond within a few hours and will give you an honest quote and timeline. I don't take on projects I can't deliver so if I say yes, I mean it.
