React Native Ad Listing App

I need a React Native app for iOS and Android that integrates with my existing WordPress site. The app should allow users to:

- Create, edit, and delete car listing ads
- Send and receive messages

Full user authentication is required.

Additionally, I'd like the following features:
- Push notifications
- Geo-location services
- Payment integration

The app design should match my current website design.

Ideal candidates should have:
- Experience with WordPress and REST API
- Proficiency in React Native
- Strong background in mobile app authentication and security
- Skills in implementing push notifications, geo-location, and payment systems