Worked on the E3SM-Project/E3SM repository, focusing on stabilizing the CIME test workflow by addressing a critical bug in the disposition logic. Applied strong debugging and testing skills to identify and resolve a persistent test failure, which improved the reliability of the continuous integration process and reduced infrastructure churn. Utilized Fortran and Git for precise code changes, maintaining a clear commit history and thorough documentation. The targeted fix ensured that the test suite passed consistently, enabling ongoing model experiments with greater confidence and reproducibility. Emphasized code quality and reproducible outcomes through validated test results and careful version control practices.