Worked on the facebook/react-native repository to enhance the stability and reliability of the native rendering pipeline. Focused on resolving a data race in the updateRendering function by introducing atomic operations for thread-safe access to eventTimingDelegate_, which addressed concurrency issues and unblocked previously failing tests. This debugging effort improved the robustness of the rendering path and increased test reliability. Utilized C++ with a strong emphasis on concurrency control and performance optimization, demonstrating attention to low-level details in native code. The work contributed to a more stable rendering experience by eliminating race conditions and ensuring safer multi-threaded execution in production environments.