Automated Appointment Booking System Development -- 2

I am in search of a skilled developer to create an automated scheduling system focused on appointment booking. The solution should seamlessly integrate with Google Calendar and provide basic customization options for end users, such as setting their preferences.

Key Features:
- Appointment booking system integrated with Google Calendar
- Basic customization options for end users
- Automatic notifications through email, SMS, and Push notifications
- User authentication system with role-based access control
- Integration with popular payment gateways for paid appointments
- Dashboard for analytics and reporting on appointments
- Support for multiple languages to cater to a diverse user base
- Companion mobile app for Android and iOS for booking on-the-go
- Automatic time zone detection and handling for global users
- Option for setting up and managing recurring appointments
- Waiting list management for fully booked slots
- Customer reviews and feedback system
- Integration with customer relationship management systems

Requirements:
- Proficient in API integration, especially with Google Calendar
- Experience in developing automated notifications (email/SMS/Push)
- Prior work with booking or scheduling systems is a plus
- Portuguese language skills and residency in Portugal or Brazil are advantageous

Please share your portfolio and relevant experience.