Android App Updates

Require updates to exting Android Play store app with varied code base started 10+ years ago. App needs TLC: incl UI, code & API call renewal. Looking for skilled medium term dev to get familiar with the code base and be available to spend a few hours a month gradually updating the app.

Skills required, includes:
* Java + Kotlin (incl. services & scheduled workers)
* Room db
* Retrofit
* XML Layouts & Widgets
* JSON REST API integration

Other:
* NDA will be required.
* Will start with an initial trail period to gauge skillset & compatibility with team.