In May 2025, Edwin contributed to the beyondessential/tamanu repository by refactoring the facility server’s createSyncApp to streamline report creation workflows. He removed unnecessary passing of reportSchemaStores, simplifying the backend logic and improving maintainability. On the frontend, Edwin updated the ReportEditor UI using React and JSX to always display the data source field, reducing cognitive load for report creators and ensuring a more consistent user experience. Working primarily with JavaScript, he focused on aligning these changes with the NASS-1633 requirements. The work addressed a targeted feature, demonstrating depth in both backend and frontend full stack development within a short timeframe.