Firebase Functions Setup for Flutter App

I'm looking for a Firebase expert to create Cloud Functions, rules, and logic for my mobile application. Your work will enable seamless backend support for our Flutter frontend.

Key Requirements:
- User authentication handling
- Real-time database updates
- Push notifications management
- Provide all necessary information to my Flutter developer for our Chat Conditions

Ideal Skills:
- Proven experience with Firebase Cloud Functions
- Strong background in Flutter and mobile app development
- Familiarity with user authentication and real-time database operations
- Ability to integrate third-party APIs (if needed)

Please share your relevant experience and approach to this task.