Developed a foundational authentication and authorization system for the UTDallasEPICS/xuchil repository, focusing on scalable role-based access control. The work involved refactoring the user model to AuthUser, introducing Role and UserRole entities to manage permissions, and adding a Worker model to represent employee roles for finer-grained authorization. Leveraging backend development skills and expertise in database schema design, the developer used Prisma ORM to create initial database schemas and migrations supporting these new models. This effort established the groundwork for secure, maintainable access control across the application, prioritizing robust RBAC scaffolding and data structure over bug fixes during the development period.