Worked on the Code-4-Community/ssf repository to enhance backend data integrity by performing a comprehensive database entity consistency cleanup. Addressed inconsistencies in entity relationships and properties, specifically removing donation-related fields to better align the schema with current domain models. Utilized TypeScript and TypeORM to refactor and update the database structure, ensuring that entity relationships were properly defined and maintained. This targeted cleanup improved maintainability and reduced the risk of runtime errors in donation workflows. The work focused on backend development and database management, delivering a more robust and reliable foundation for future feature development and ongoing system stability.