Flutter App Configuration

I need a skilled Flutter developer to configure my app, ensuring seamless front-end and back-end connectivity. All source code is available.

Key Requirements:
- Firebase as backend
- Configure:
- User authentication
- Data fetching and display

Ideal Skills and Experience:
- Proficiency in Flutter and Firebase
- Experience with front-end integration and user authentication
- Strong understanding of data fetching and display in Flutter apps

Please provide relevant experience in your bid.