Boosting Bubble App for Better Performance

For my existing business's Bubble app, I require an experienced developer to assist me with the goal of enhancement in the terms of reliability and performance. The area that I especially want to focus on is the poor functionality of certain features. Your role will involve going through the app, identifying the problematic aspects, and refining it for smoother operation.

Ideal skills and experience:
- Proven track record in app improvement
- Robust knowledge of Bubble
- Deep understanding of performance optimization

End goal: A polished, reliable, and fully operational app ready for publishing.