Android App Speed Optimization

I'm seeking an experienced Android developer to upgrade my app's performance, specifically focusing on app speed.

Key requirements:
- Quicker response to user actions is the primary goal.
- Experience in optimizing Android applications for improved speed.
- Strong understanding of Android architecture and performance bottlenecks.

Ideal skills and experience:
- Proven track record in performance tuning
- Knowledge of memory management and efficient coding practices
- Familiarity with profiling tools and debugging for Android apps

Please share relevant experience and approach.