Mapbox Navigation Integration for Android

I am seeking a proficient android developer experienced in working with open-source software to help develop software for my driving school students.
The open source software that we'll be updating can be found here: https://github.com/Mobile-Telematics/TelematicsApp-Android. We'll be adding Mapbox navigation functionality to this software. Key requirement includes:
- Adding turn-by-turn navigation from Mapbox to the software.

The ideal candidate should have a decent understanding of Mapbox's basic features and experience with Android development. If you have previously worked with Mapbox or other navigation platforms, please mention this in your proposal. Additionally, prior experience with open-source software should be highlighted. Understanding the needs of this project and delivering within an agreed timeframe is crucial.