During February 2025, Vaessen focused on maintaining the reliability of the torchmetrics test suite within the Lightning-AI repository. He updated the Python-based tests to accommodate changes in the jiwer library, replacing deprecated compute_measures calls with the newer mer and wer functions. This approach preserved the original test semantics while ensuring compatibility with recent jiwer versions, directly reducing the risk of CI breakages caused by dependency updates. Vaessen’s work demonstrated careful attention to testing discipline and dependency management, emphasizing the importance of stable continuous integration outcomes. His contributions centered on Python and testing, addressing maintenance challenges rather than feature development.