Angular & Java Spring Boot Auth System

I'm looking for a developer to help me create a robust authentication system using Angular and Java Spring Boot.

Key Features:
- The system should primarily support username and password authentication methods.
- It will need to cater to a single user role - the 'User'. There are no requirements for Admin or Guest roles at this point.
- The authentication system should integrate with an existing MySQL database.

Ideal Skills:
- Proficiency in Angular and Java Spring Boot
- Experience in developing authentication systems
- Familiarity with MySQL

Please, only bid if you can demonstrate relevant experience and understand the technical requirements.