Android App for Buying & Selling

I'm looking to develop an Android application that serves as a platform for buying and selling all types of goods - from physical products to digital items and services.

Key Features:
- User Ratings and Reviews: I want users to be able to rate and review both products and sellers. This will help build a trustworthy community and enhance user engagement.
- Secure Payment Gateway: A vital aspect of this app is the integration of a reliable and secure payment system. It should handle transactions smoothly and securely to ensure user safety.
- Push Notifications: The app should be able to send push notifications to users about updates, new products, special deals, etc. This feature is crucial for keeping users active on the platform.

Ideal candidates for this project should have:
- Extensive experience in Android app development
- Proficiency in integrating secure payment systems
- Knowledge in implementing user review systems
- Skills in incorporating push notification features
- A portfolio of similar apps developed in the past.