Addis worked on the cashapp/misk repository, focusing on enhancing the clarity of database migration error reporting. They developed a feature that refactored the exception message format in TraditionalSchemaMigrator, ensuring missing migrations are highlighted before applied migrations. This adjustment addressed confusion during schema migrations by making error messages more actionable for developers. Addis updated the corresponding tests in Kotlin to verify the new message ordering and maintain stability across migration paths. Their work demonstrated a solid understanding of database migration processes, error handling, and testing practices, delivering a targeted improvement that streamlined troubleshooting for teams working with evolving database schemas.