Cross-Platform Loyalty App Development

I'm seeking an experienced app developer to create a loyalty app for both iOS and Android. This app should provide a cloud-based admin interface, accessible via a web browser. The admin's role will include managing users and accessing various statistics and analytics.

Key Features:
- Biometric authentication for user login
- Social media logins from Facebook, Google, and Twitter
- A comprehensive points system, tier levels, and discount vouchers as part of the rewards/loyalty features

Ideal Skills:
- Cross-platform app development (iOS and Android)
- Cloud-based admin interface development
- Experience with loyalty program implementations
- Expertise in integrating biometric and social media logins