Over a two-month period, contributed to the bettercodepaul/swt2-bsa-backend and bettercodepaul/swt2-bsa-frontend repositories by delivering security, data-access, and code quality improvements. Enhanced backend readability and maintainability by refactoring equality checks in Java and Spring Boot, aligning with coding guidelines. On the frontend, strengthened user access controls and restored application functionality following database schema changes using Angular and TypeScript. Introduced a permission-based data access model with supporting database migrations, improving governance and reducing security risk. The work demonstrated a full stack approach, addressing both backend and frontend challenges while ensuring system stability during ongoing schema and access control evolution.