Worked on the Shopify/ci-queue repository to improve the reliability and maintainability of continuous integration workflows. Focused on enhancing observability and test accuracy, the developer identified and corrected a critical typo in the worker leader election log output, ensuring that log messages accurately reflect leadership status. This change was implemented in Ruby and accompanied by updates to the corresponding unit tests, aligning assertions with the corrected log message. By addressing this bug and refining test coverage, the work reduced the risk of misdiagnosis during incident triage and contributed to more reliable CI processes, emphasizing skills in bug fixing and testing.