Android applications with freebase backend

I am looking for an experienced Android developer who can create an application with a freebase backend that has a productivity focus. While I have a general idea of the features I want included, I am open to suggestions from the developer. I would prefer a moderate level of user interface complexity with some customization options.

Ideal skills and experience:
- Strong experience in Android app development
- Experience with freebase backend integration
- Ability to design and implement a user-friendly interface with customization options
- Good communication skills to collaborate on the development process and provide suggestions and feedback.