Android App Review and Gamification

I need an experienced Android developer to review my application for bugs, assist with publishing it on the Google Play Store, and incorporate gamification elements such as rewards and badges.

Key Requirements:
- Comprehensive bug review and fixing
- Publishing expertise for Google Play Store
- Gamification integration experience
- Android development proficiency

Ideal Skills & Experience:
- Android app development
- Familiarity with Google Play Store policies
- Background of gamification design

Please provide a portfolio that showcases your relevant experience.