During November 2024, this developer focused on backend stability work in the apache/pulsar repository, addressing reliability issues rather than delivering new features. They improved test suite robustness by fixing error handling in ManagedCursorTest, ensuring that asynchronous ledger recovery errors are now correctly reported to callbacks. Additionally, they enhanced test reliability for multi-topic and Dead Letter Topic scenarios by adjusting receiver queue sizing to better reflect buffer limitations. Working primarily in Java and leveraging strong testing skills, their contributions reduced test flakiness and improved confidence in Pulsar’s recovery paths. This work deepened the reliability of the codebase and streamlined future development.