Worked on the sreichel/magento-lts repository, focusing on backend development to address a critical data integrity issue within the catalog’s product relations. Delivered a targeted PHP bug fix that prevents orphaned catalog_product_relation entries when bundle options are deleted, thereby maintaining catalog consistency and reliability for product bundles. The solution involved careful debugging of edge cases in relational data and precise commit messaging to ensure traceability and maintainability. By reducing the risk of corrupted bundle behavior and downstream data issues, the work demonstrated a strong understanding of regression prevention and data model integrity, with a clear emphasis on robust backend engineering practices.