Jens Jung worked on improving the reliability and maintainability of the SyncService in the bettercodepaul/swt2-bsa-backend repository during March 2026. He focused on backend development using Java, where he removed an unused synchronization constant and eliminated an unnecessary exception declaration to align the code with actual usage. Jens updated the unit tests to reflect these changes, ensuring continued coverage of the synchronization path. This targeted refactoring reduced the risk of runtime errors and simplified future enhancements. His work demonstrated a methodical approach to code cleanup, emphasizing maintainability and clarity in backend systems through careful use of Java and unit testing.