Full Stack Android App Development

I'm looking for a skilled full-stack developer to create an Android application focused on data entry and retrieval. The app will need user authentication and will store data in a remote database.

Core Requirements:
- User authentication
- Data entry and retrieval
- Remote database storage

Ideal Skills:
- Proficient in Android development (Java/Kotlin)
- Experience with remote databases (Firebase, PostgreSQL, etc.)
- Strong knowledge in user authentication mechanisms
- Familiarity with data entry and retrieval UI/UX design

Please share previous relevant work.