Sivakumar Nuka focused on enhancing the reliability of MACsec session management in the sonic-net/sonic-swss repository, addressing a critical memory corruption issue during port updates. Using C++ and leveraging expertise in network device management and system programming, Sivakumar implemented a memory-safe session lifecycle for MACsec, ensuring that existing sessions were properly finalized before new ones were created when profiles changed. This approach prevented data corruption and reduced the risk of outages during security configuration changes. The work demonstrated a deep understanding of low-level system behavior, resulting in improved stability and customer trust for MACsec-enabled network ports in production environments.