Basic Android Grocery Ordering App

I need a basic Android app designed for customers to order grocery and household items in India. The application should have the following features:

User Authentication:
- Phone number and OTP based login for user verification.

Payment Method:
- The app should only include Cash on Delivery as the payment method.

Product Catalog Features:
- The app should have a searchable product catalog.
- Users should be able to filter products by category.

Ideal Skills & Experience:
- Proficient in Android app development.
- Experience with e-commerce app development is a plus.
- Knowledge of implementing user authentication and payment integration in apps.
- Understanding of designing user-friendly product catalogs.