Hospital Management Database

I'm looking for a SQL-based database to support our hospital management system. The primary users will be administrative staff, and we need the following functionalities:

- Patient Records Management
- Appointment Scheduling
- Billing and Invoicing

Ideal skills and experience:
- Proficiency in SQL database design and management
- Experience in developing hospital management systems or similar applications
- Ability to create user-friendly interfaces for administrative staff

Looking forward to your bids!