Worked on the Automattic/jetpack repository to address a persistent React cache error affecting UI stability. Upgraded the React library to version 18.3.1 and implemented a cache-breaking mechanism, ensuring that users received the latest code and reducing runtime errors. Delivered this solution as a focused hotfix, minimizing risk to production environments while aligning with the broader React upgrade strategy. Demonstrated expertise in frontend development, PHP, and WordPress by managing version dependencies and cache invalidation. The work resulted in more consistent UI rendering and fewer support tickets, reflecting a methodical approach to incident response and maintenance within a complex codebase.