Professional Services Booking System Development

I need a comprehensive platform (Website + Mobile App) for booking professional services. The primary feature is a robust services booking system.

Key functionalities include:
- Calendar integration
- Automated reminders
- Payment processing
- Detailed booking information (date, time, location, etc.)

Additionally, the platform should include:
- API Integration: Connect with other platforms/services
- E-commerce: Selling related products/services
- Voting System: Allow users to vote on service options or time slots

Ideal skills and experience:
- Strong background in developing booking systems
- Experience with API integration
- E-commerce platform development
- User-friendly UI/UX design

Please provide examples of similar work done.