Service Booking App Development -- 2

I need a skilled mobile app developer to create a service booking app aimed at increasing sales. The app should have an intuitive interface and seamless navigation to enhance user experience.

Key Features:
- User Registration/Login
- Service Categories and Listings
- Booking System with Calendar Integration
- Payment Gateway Integration
- User Reviews and Ratings
- Admin Dashboard for Service Management

Ideal Skills and Experience:
- Proven experience in mobile app development, especially service booking apps.
- Strong understanding of UI/UX principles.
- Familiarity with payment gateway integration.
- Ability to create an efficient admin dashboard.
- Excellent problem-solving skills and attention to detail.

Please provide examples of previous work.