MTN Mobile Money & Kola Kash Integration

I'm in need of a seasoned developer who can integrate MTN Mobile Money and Kola Kash payment APIs into both my Music Mobile App and Website.

Key Details:
- Platforms: Both the Mobile App (built on Xamarin Android Native) and the Website (developed in PHP).
- Payment Systems: MTN Mobile Money and Kola Kash.
- Purpose: The integration is for a Music Mobile App and its corresponding Website.

Ideal Skills and Experience:
- Expertise in Xamarin for mobile development.
- Proficient in PHP for website development.
- Previous experience integrating MTN Mobile Money and Kola Kash APIs.
- Strong understanding of payment system integrations in mobile and web platforms.