React Native App UI Development

I'm looking for a skilled React Native developer to create a high-quality user interface for my mobile app, which needs to be functional on both iOS and Android platforms.

Key Requirements:
- Develop a user-friendly and visually appealing UI
- Ensure the app is responsive and performs well on both platforms
- Adhere to best practices in mobile UI/UX design

Ideal Skills and Experience:
- Proficiency in React Native
- Strong background in mobile app UI/UX design
- Experience with both iOS and Android development
- Knowledge of design principles like Material Design or Flat Design

Please provide your portfolio showcasing similar work.