Duitku or Tripay Payment Integration for ClientExec

I’m in need of a professional PHP programmer to integrate Duitku payment gateway with my ClientExec system. This project will involve creating an efficient payment notification system, as well as invoice generation and automatic payment reconciliation. Experienced freelancers who have successfully performed similar integrations are especially welcome. Mastery of PHP is essential. Knowledge of payment gateway integration and a keen eye for detail will be advantageous for this project.