Android Marketplace Mobile App

I'm in need of an Android mobile application that functions as a marketplace for buying and selling goods. The main purpose of this app is to facilitate transactions between users. The app will cater to both buyers and sellers, providing a platform for seamless transactions.

Key Features Include:
- **User Profiles**: Registered users should be able to create their profiles within the app. These profiles will help in enhancing user experience and building trust between users.
- **In-App Messaging**: A built-in messaging system will allow buyers and sellers to communicate directly within the app. This feature is essential to facilitate smooth transactions and to address any issues that may arise during the buying or selling process.

Ideal Skills and Experience:
- Proficiency in Android app development, particularly in building e-commerce or marketplace apps
- Prior experience with integrating user profiles and in-app messaging systems
- Familiarity with implementing a payment gateway within an app would be a plus, though this feature is not yet a core requirement for this project