Worked on the openucx/ucx repository over a two-month period, focusing on both robustness and performance improvements in C. Addressed stability in the UCP/RKEY memory handle packing path by introducing null pointer guards and enhancing logging, which improved traceability and prevented dereferencing errors during TRACE mode. In the following month, developed a feature to optimize asynchronous failure scheduling in the UCP/EP/FT module, implementing async block and unblock mechanisms to increase worker task management responsiveness under failure conditions. Demonstrated skills in C programming, asynchronous programming, and system-level debugging, contributing targeted enhancements that improved codebase reliability and scalability.