Gaming Tournament App Development

I'm looking for an Android Studio expert to develop and refine a gaming tournament app. You'll work from my existing source code, fix bugs, and add new features.

Key Requirements:
- Fix existing issues: app crashes and slow performance.
- Add live chat support feature.
- Create a fresh app and upload app data to a Hostinger server.

Ideal Skills and Experience:
- Proficiency in Android Studio and app development.
- Strong debugging skills.
- Experience with integrating live chat functionalities.
- Familiarity with Hostinger and app deployment.

Please provide a portfolio with relevant experience.