Fix Flutter App Bugs & UI

I need a skilled cross-platform mobile app developer to fix bugs and implement UI changes on my Flutter app. Ideally, you should have knowledge in the Finance and Investment domain.

Key Requirements:
- Address crashes, freezes, and data display issues
- Resolve non-functional features
- Implement necessary UI changes (to be discussed)

Ideal Skills:
- Proficiency in Flutter
- Strong debugging and problem-solving skills
- Experience with finance and investment apps is a plus

Please provide a portfolio with relevant experience.