Worked on the hmrc/pension-scheme-return-sipp-frontend repository to enhance user feedback for file uploads by updating success messages across various asset types. Focused on frontend development and localization, the changes involved replacing the term 'event' with 'return' in upload confirmations to better align with domain-specific terminology and clarify where uploaded files are added. Utilized JavaScript to implement these content updates, ensuring consistency and improved clarity in user interactions. The work addressed user experience by making feedback more intuitive and accurate, supporting clearer communication in the application’s interface without introducing new bugs or altering existing backend functionality.