Android App Review & Optimization Expert

I'm seeking a seasoned Android developer to enhance, refine, and test my application. The project requires a deep commitment to examining, fixing, and improving the code to maximize potential profitability. This is a long-term project.

Ideal skills include:
- Proficiency in Android development (Java/Kotlin)
- Experienced in handling complex projects

Tasks will encompass:
- Code review, optimization, and bug fixes
- Implementation of security features and cross-device testing
- Collaboration on auxiliary testing applications

The primary focus is performance optimization. Please note that I have not yet identified specific performance issues or version requirements.