Java Endpoint Security Role Testing

I need an experienced Java developer to examine and fix our endpoints' security features. Currently, we are using JWT for authentication, but we need to verify and test the 'Admin', 'User', and 'Supervisor' roles.

Key Tasks:
- Test and verify security features for 'Admin', 'User', and 'Supervisor' roles
- Ensure endpoints work correctly for each role
- Fix any identified security issues

Ideal Skills:
- Strong background in Java programming
- Proficiency in endpoint security
- Experience with JWT authentication
- Ability to troubleshoot and fix security issues
- Excellent understanding of role-based security

Your work will be crucial in ensuring our endpoints are secure and functioning as intended.