Android Code for Vending Machine

I need a skilled Android developer to write code for my vending machine. This code should control vending machine operations, track inventory, and process payments.

Key Requirements:
- Develop an Android application
- Control vending machine operations
- Track inventory in real-time
- Securely process payments

Ideal Skills:
- Proficiency in Android development
- Experience with payment processing integration
- Strong background in real-time inventory management systems

I need this project completed ASAP.