PayU Integration as Primary Payment Gateway in Android Dating App

I need an experienced developer to integrate PayU as the primary payment gateway in my existing Android-based dating app available on the Google Play Store. The app currently has another gateway, but I want to replace it with PayU or add it as the primary payment method. The integration must ensure seamless transactions, secure payment processing, and full compliance with security standards. The project needs to be completed ASAP with thorough testing and app update deployment.