Android App for EMI Collection & Security -- 2

I need a skilled Android developer to create an app focused on EMI collection for mobile sales and incorporating a mobile locking system for loan security.

Key Features:
- EMI Collection: The app should include functionality for EMI collection. This involves implementing a mobile locking system that secures the device until the loan is repaid.
- Mobile Locking System: The mobile locking system should be a pattern lock, which is user-friendly.
- Remote Lock Activation: A crucial feature of the mobile locking system is the ability to remotely lock the device.

Ideal Skills & Experience:
- Proficient in Android development with a focus on security features.
- Previous experience in developing finance-oriented apps is a plus.
- Understanding of implementing mobile locking systems.

Please include relevant portfolio pieces in your application.