Mobile App Membership & Topup System

I'm looking for an experienced Android developer to create a mobile app for a membership and topup system in Malaysia. The app will host games with 12 participants each, and 3 winners per game.

Key Features:
- User Registration and Login: The membership system should be simple and intuitive, allowing users to easily register and login.

Skills Needed:
- Proficient in Android App Development
- Experience in creating membership systems
- Ability to integrate topup functionalities

Please note, the app is exclusively for Android at this stage.