Heiner developed a targeted feature for the amzn/rdma-core repository, enhancing RDMA completion channel timeout handling by exposing the ibv_comp_channel file descriptor. This addition allows pollfd-based timed waits for completion events, reducing latency and improving the efficiency of event-driven RDMA workloads. The work was delivered as a concise, well-scoped patch in Cython, demonstrating careful attention to minimizing code surface area and aligning with external documentation. Heiner applied low-level programming and system programming skills to address scalability and responsiveness, enabling timeouts and reducing unnecessary wakeups. The solution reflects a thoughtful, focused approach to solving a specific RDMA event handling challenge.