Cross-Platform Carpooling App Development

I need a carpooling app developed for both iOS and Android platforms. The app should include:

User Registration and Login
Ride Booking and Scheduling
Payment Gateway Integration
GPS and Real-Time Tracking for Both Drivers and Passengers

Ideal Skills and Experience:
- Mobile app development for iOS and Android
- Experience with user authentication and payment integrations
- Expertise in implementing GPS and real-time tracking features
- Strong UI/UX design skills for intuitive user experience

Looking for a candidate with a proven track record in delivering similar apps.