Multi-Platform Tour Management Front-End Development

I'm searching for a proficient developer to help me build a front-end website and app for my existing tour management software. It should seamlessly integrate with our PHP and MySQL-based back-end, enabling users to manage reservations for hotels, flights, and packages.

Ideal Skills and Experience:
- Prior experience with front-end development on iOS, Android, and Web platforms
- Proficiency in modern and sleek design concepts
- Experience with real-time booking update integration
- Past work in user profile management and payment gateway integration

Key Functionalities:
- Real-time booking updates: The front-end should display and update bookings in real-time to ensure accurate information for users and administrators.
- User profile management: It should allow users to set up, edit, and manage their profiles, which will be crucial for a personalized experience.
- Payment gateway integration: This aspect is central to the software, it should be able to handle secure online payments for reservations.