Worked on strengthening the test infrastructure and core data handling for the bluesky suite, focusing on maintainability and future scalability. In the bluesky/ophyd-async repository, centralized the simulated detector creation into a reusable pytest fixture, streamlining test setup and reducing boilerplate. Enhanced the Tiled Writer in bluesky/bluesky by consolidating validation logic and optimizing Resource and StreamResource schema handling, ensuring compatibility with evolving data formats. Leveraged Python, pytest, and backend development skills to improve test reliability and performance. The work emphasized clear code paths, efficient migration of older schemas, and robust data validation, supporting ongoing development and schema evolution.