Multi-Platform Sharia-Compliant P2P Payment App

I need a scalable, Sharia-compliant P2P payment transfer app. The app should be developed for Web, iOS, and Android platforms.

Core functionalities include:
- Sending money locally and internationally
- Paying bills
- Buying airtime
- Investments

User authentication should include:
- Email and password
- Biometric (fingerprint/face ID)
- Two-factor authentication (2FA)

Ideal skills and experience:
- Experience developing secure payment applications
- Familiarity with Sharia compliance in financial apps
- Expertise in biometric and 2FA authentication methods
- Proficiency in cross-platform app development

Please provide samples of relevant work.