Analyze system performance and capacity across compute, memory, storage, networking, connections, and other constrained resources; identify operating limits and address issues through the simplest effective solution, whether optimization, additional capacity, scaling, caching, configuration changes, or architectural improvements. Strong Linux systems expertise, including CPU, memory, storage, networking, processes, sockets, and system services, with a strong understanding of performance and capacity concepts such as IOPS, throughput, latency, queue depth, and connection concurrency.