Looking for experienced Android developer

We are looking for an Android developer who will help us maintain, fix and build new features for our new rewards app:
https://play.google.com/store/apps/details?id=com.foxpoints

Ideally we are looking for someone who will be able to do both FrontEnd development as well as some BackEnd development.

Based on the work flow, we also have some other several projects that required android development.

Requirements:
EXPERIENCED
MOTIVATED
FLUENT ENGLISH