During October 2025, Davie Wales focused on backend development and API integration within the MobilityData/mobility-database-catalogs repository. He addressed a critical issue affecting the Transport for NSW realtime feeds by correcting the API endpoints, which restored accurate data retrieval and improved the reliability of the realtime data service. Using Python, Davie validated the changes to ensure they did not introduce regressions in downstream catalogs, demonstrating careful attention to system stability. Although the work centered on a single bug fix rather than new features, it required a deep understanding of API structures and backend workflows to maintain consistent data ingestion.