Worked on the happy-geeks/wiser repository, focusing on enhancing product data management by improving time handling and strengthening security. Addressed data integrity by replacing MySQL NOW() with C# DateTime.Now and standardized cooldown calculations, ensuring consistent and reliable time-based operations. Migrated cooldown and date values to parameterized SQL queries to mitigate SQL injection risks, contributing to safer backend processes. Fixed a product refresh calculation bug, updating both the API logic and release notes to clarify changes for clients. Demonstrated skills in API development, backend development, and SQL, with a technical approach centered on robust data handling and clear client communication.