Worked on the folio-org/mod-data-export-worker repository to enhance the reliability and accuracy of data exports by addressing a critical bug in the CirculationLogCsvPartitioner. Focused on backend development using Java, the solution involved correcting the log count mechanism by adjusting the query limit, ensuring that exports reflect the true total number of records. This change prevented unintended data retrieval and improved the integrity of downstream analytics and reporting. The fix was implemented with clear traceability to the related issue and validated through unit tests, supporting maintainability and auditability within the codebase while strengthening overall data quality for users.