During December 2024, this developer focused on enhancing the reliability of RDMA operations in the fzyzcjy/Mooncake repository. They addressed a bug in the RDMA device selection logic, ensuring that prioritized NIC ID lists are correctly respected during operation retries. Working primarily in C++ and leveraging expertise in network programming and RDMA, the developer improved the stability and predictability of RDMA paths under retry scenarios. Their changes reduced flaky behavior and support incidents by refining how the system selects devices when retry counts increase. Clear documentation and traceability were maintained, supporting future maintenance and onboarding for the Mooncake project.