Looking for Mobile App designer for Loyalty app

I am in need of a mobile app designer who can create a loyalty app that will help me increase my customer retention. I am open to suggestions on the design, but I want the app to have a rewards/points system that will keep my customers engaged. In addition, the app should include a wallet and customized promotions/offers. Ideal skills and experience for this job would include:
- Mobile app design
- Experience with loyalty programs and rewards systems
- Creativity and a good eye for design
- Strong communication skills to ensure the app meets my needs and preferences.
We need a quick turn around time