Room Booking App Development

I'm looking for an experienced developer to create a basic room booking app with paid time duration and access activation. The app can initially be deployed on a single tablet with a "reserve as you enter" functionality, or developed as a multi-platform app.

Key requirements include:

- Paid time duration for bookings
- Access activation
- Real-time availability feature

Preferred technologies: Flutter, Dart, Stripe, with back-end activation.

Ideal Skills and Experience:
- Proficient in Flutter and Dart
- Experience with Stripe for payment integration
- Strong back-end development skills
- Previous experience in building booking or reservation systems
- Familiarity with real-time data handling and notifications

Please provide examples of similar work done and your approach to this project.