Android APK Payment Integration

I'm looking for a skilled developer to integrate both Google Play Billing and Stripe Billing into my Android APK. The integration should support both subscriptions and one-time purchases.

Key Requirements:
- Experience with Google Play Billing and Stripe Billing
- Android Build compilation
- Provision of App bundle and App apk
- Roll-out of App on the playstore
- Knowledge of Android app development
- Capability to set up both subscriptions and one-time purchases

The level of user authentication and security required for this integration is basic. Your understanding of secure payment processing and user privacy will be appreciated.

Skills & Experience:
- Android Development
- Payment Gateway Integration
- Google Play Billing
- Stripe Billing