Android developer with music/sound projects experience -- 2

We are looking for an expert level Android developer with experience in music/sound/media projects.

We have an existing app https://play.google.com/store/apps/details?id=io.swar.taal

This needs to be enhanced.


The ideal developer should have expertise in developing mobile apps with expertise in
Android Kotlin
Android MVVM
Exoplayer
JavaX sound
Material Design
Firebase
File Management Systems (Android)


The client already has an existing app that requires further enhancements, so the developer should be comfortable working with an existing codebase.
They expect the developer to provide recommendations based on best practices and user experience. The developer should be able to work independently and have excellent communication skills to provide regular updates on the project's progress.