Fix Flutter App Bugs

I'm seeking an experienced Flutter developer to take over my existing app project. The app currently has some bugs and crashes, particularly in the payment processing section using Stripe.

Key Requirements:
- Expertise in Flutter development
- Strong experience with Stripe integration
- Proven track record in debugging and resolving app crashes

Ideal Skills & Experience:
- Familiarity with UI/UX principles to ensure a smooth user experience
- Ability to enhance app performance post-bug fixes
- Strong problem-solving skills and attention to detail

Please provide examples of similar work done and your approach to tackling these issues.