Worked on the internetarchive/openlibrary repository to restore and harden data export functionality, focusing on TSV data dumps for ratings, reading logs, and cover metadata. Addressed a regression in the export pipeline by applying SQL scripting and database management skills to ensure correct TSV formatting, which improved data portability and reduced downstream analytics errors. Validated the integrity and compatibility of exported data with analytics systems and partner integrations, emphasizing reliability in data workflows. The work centered on bug resolution rather than feature development, demonstrating a methodical approach to maintaining data quality and supporting the broader Open Library data ecosystem through targeted SQL improvements.