React Native Scheduling App Development

I'm seeking a React Native expert to build a promotional marketing app connecting customers, businesses, and admins for scheduling over the next several weeks.

Key requirements:
- React Native experience is a MUST.
- Registration/authentication via Gmail, Apple, Facebook.
- Google Maps API integration.
- Outlook & Gmail Calendar integration.
- Native calendar build within the app.
- 3-way chat with real-time messaging, image/video uploads, and push notifications.
- Stripe payment gateway integration.
- UX expertise for smooth front-end flow (brand assets and identity will be provided).

I'm looking for 20 hours of work per week for as many weeks as necessary to complete the project—estimating 8-12 weeks. Ideal candidates should have a strong background in mobile app development, especially with React Native, and experience with the listed technologies and integrations.