Vibrant UI-UX Design for Cashback App

I'm in need of a talented UI-UX developer who can design a rewards app for both iOS and Android platforms. The app will primarily offer cashback rewards, so the design should facilitate an easy understanding and navigation of these features. I'm looking for a design that is vibrant and colorful, setting it apart from typical minimalist or corporate apps.

Skills and Experience:
- Proven experience in designing for both iOS and Android platforms
- Strong portfolio of vibrant and colorful designs
- Experience in creating UI-UX for rewards or cashback apps is a plus
- Proficiency in user-centered design principles and techniques
- Excellent communication skills to understand and implement my vision.