Worked on the Netflix/hollow repository to enhance the Diff UI by delivering a deterministic header sorting feature for the Blob Information table. Addressed inconsistencies in header display by replacing a non-deterministic HashSet with a TreeSet, ensuring that header entries appear in alphabetical order regardless of run or JDK version. This adjustment improved user experience and predictability for code reviewers and diff viewers, while maintaining existing UI behavior and performance. The work involved Java for backend logic, UI development for interface consistency, and unit testing to validate the changes, resulting in a more reliable and maintainable presentation of diff data.