Full-Stack Mobile App Developer Needed to Complete Chat App to Production

I’m looking for one trusted full-stack developer to take over an existing mobile chat app and bring it to production.

The project already has:
1. Flutter mobile app UI/screens
2. Existing backend codebase
3. Admin panel
4. Database schema and API work started
5. Existing app concept, design assets, and APK builds

The remaining work is mainly:
Review and clean up the existing codebase
Connect the Flutter app to the backend APIs
Complete authentication and user onboarding
Complete real-time chat functionality
Fix backend issues and missing production features
Implement safety/reporting/blocking flows
Complete media sharing and notification flows
Prepare app for production deployment
Improve testing, security, and reliability
Support app store readiness if needed

Required Skills
1. Flutter / Dart
2. Node.js / NestJS or strong backend TypeScript experience
3. PostgreSQL / Prisma
4. Redis / WebSockets / Socket.IO
5. Firebase or push notification experience
6. AWS or production deployment experience
7. Ability to read and improve existing code
8. Strong communication and ownership

Important
I am not looking for a large agency or multiple people. I want one capable developer who can handle both frontend and backend, audit what already exists, tell me the truth, and finish the product properly.
The developer must be comfortable working with an existing partially built app, not starting from scratch.

Ideal Candidate
Someone who has shipped real apps before, understands mobile + backend integration, and can work independently without overcomplicating things.

Please reply with:
1. Examples of Flutter apps you have shipped
2. Backend/API projects you have built
3. Your experience with real-time chat or WebSockets
4. Your approach to taking over an existing codebase
5. Whether you can handle both frontend and backend yourself