Andreas Michels focused on backend development for the ILIAS-eLearning/ILIAS repository, addressing reliability in anonymous user handling. During the month, he refactored the ilObjTest.php file, replacing direct user object access with a more robust approach that leverages the pre-existing user_id variable and enforces integer casting. This targeted PHP bug fix improved type safety and reduced the risk of runtime errors in authentication edge cases, particularly for anonymous users. By aligning the solution with established code patterns, Andreas enhanced maintainability and test stability. His work demonstrated depth in backend engineering, emphasizing correctness and robustness over feature delivery during this period.