Need an app for billing payment

I am looking for a skilled app developer to create a billing payment app for Android.

Platform: Android
- The app should be specifically developed for the Android platform.

UI design
-UI design is ready.

Timeline:
- The project should be completed within 1-2 weeks.

Ideal Skills and Experience:
- Experience in Android app development
- Proficiency in integrating online payment systems
- Strong understanding of billing and payment processes
- Ability to deliver high-quality work within tight deadlines