Senior Cross-Platform Mobile App developer – Flutter (iOS & Android)

I'm seeking a skilled developer to help turn my rough wireframes into a functional mobile app for both iOS and Android platforms.

The app will include:
- User authentication
- In-app purchases
- Push notifications

Ideal Skills and Experience:
- Proficiency in Flutter, Dart, and cross-platform app development
- Experience with mobile app development for iOS and Android
- Familiarity with core functionalities like user authentication, in-app purchases, and push notifications
- Strong design skills to refine and implement rough wireframes

Please provide samples of your previous work and a brief outline of your approach.