Flutter Firebase Microblogging App

I'm seeking an experienced Flutter and Firebase developer to create a microblogging app similar to Twitter.

Core Features:
- User authentication: Email/password, phone verification, Google login
- Post creation and feeds: Only text posts
- Interactions: Commenting, liking, reposting, and sharing
- Follow/unfollow functionality

Ideal Skills & Experience:
- Proficient in Flutter and Firebase
- Strong background in developing authentication systems
- Experience with social media-style feeds and interactions
- Ability to deliver clean, user-friendly interfaces

Please provide examples of similar work done and estimated timelines.