Thomas Hopkins strengthened the test infrastructure for the bluesky/ophyd-async repository by centralizing the simulated detector fixture into a shared pytest conftest.py, streamlining detector creation and improving test reusability. In bluesky/bluesky, he enhanced the Tiled Writer’s backend by consolidating validation logic and optimizing Resource and StreamResource schema handling, reducing unnecessary data copying and ensuring compatibility with evolving data models. Using Python and pytest, Thomas focused on backend development and data handling, reducing boilerplate and improving test reliability. His work improved maintainability and future scalability by aligning code paths with the latest schema standards and clarifying migration for legacy data.