Shahar worked on the dragonflydb/bullmq repository, focusing on improving the reliability and stability of integration and worker processing tests over a two-month period. By adjusting timeouts, correcting assertions, and aligning test expectations with actual system behavior, Shahar addressed flakiness in the GitHub Actions CI pipeline. The work involved targeted updates in JavaScript and TypeScript, including relaxing or removing strict assertions and skipping unreliable test cases to reduce false negatives. These changes did not alter production code but resulted in more deterministic test outcomes, faster feedback cycles, and increased confidence in release processes, demonstrating depth in integration testing and CI maintenance.