Flutter App Finalization & Deployment

Existing Flutter Application — Production Build & Deployment We have an existing Flutter mobile application with a Python/FastAPI backend. The application is already substantially developed. We are looking for an experienced Flutter developer or small team to complete production engineering, live integrations, device testing and Android/iOS deployment. Important This is not a new app development project. The selected developer must work from the supplied source code and continue from the existing architecture. We do not want the application rebuilt from scratch unless a specific technical issue is identified and approved. Technology Stack - Flutter - Android / iOS - Python / FastAPI - PostgreSQL - Redis - Firebase - FCM / APNs - REST / OpenAPI APIs - OCR / ML Kit - Offline synchronization - Secure local storage - Background services / notifications Scope of Work - Set up and review the supplied Flutter and backend source - Resolve dependencies and generate genuine lockfiles - Run Flutter analyze/tests and fix build issues - Build Android APK/AAB - Build iOS/TestFlight-ready archive - Configure Android and iOS signing - Configure Firebase production environment - Configure FCM and APNs - Configure OTP/SMS provider - Configure backend API integrations - Configure OCR and file-storage services - Configure PostgreSQL and Redis production environment - Configure production secrets securely - Configure mobile app integrity/security controls - Test notifications and background execution - Test offline/reconnect behavior - Test on physical Android and iPhone devices - Fix runtime/device-specific issues - Deploy backend to production - Support Google Play Store submission - Support Apple App Store/TestFlight submission - Provide final clean source and deployment documentation Developer Requirements Strong practical experience required in: - Flutter production applications - Android release engineering - iOS/Xcode release engineering - Python/FastAPI - PostgreSQL - Firebase - FCM/APNs - Mobile background processing - Offline synchronization - REST APIs - Google Play deployment - Apple App Store/TestFlight deployment Experience with mobile security, Firebase App Check, Play Integrity, Apple App Attest, OCR and external API integrations is preferred. When Submitting Your Bid Please provide: 1. Fixed-price or milestone-wise quotation 2. Exact scope included in your quotation 3. Flutter experience 4. Android/iOS release experience 5. Backend/FastAPI experience 6. Links to production apps you have personally worked on 7. Whether Play Store deployment is included 8. Whether App Store/TestFlight deployment is included 9. Whether Firebase/server setup is included 10. Number of people who will work on the project 11. Any third-party service costs that are excluded Please do not submit a generic bid. Detailed functional information and complete source code will be shared only with shortlisted developers.