Android Developer for Productivity App

I'm looking for an experienced Android application developer to create a productivity tool for me. The application will primarily focus on a task to update the local files as same as on server using API.

Key Responsibilities:
- Develop an Android app focused on productivity.
- Integrate the app with a restful API.

Ideal Skills and Experience:
- Proven experience in Android application development.
- Strong understanding of productivity tools.
- Experience with restful API integration.

Please share your relevant portfolio when bidding.