2+ years of hands-on experience troubleshooting and maintaining server hardware in a datacenter environment, including diagnosing hardware faults (power, thermal, storage, networking), performing component replacements (drives, memory, CPUs, PSUs, HBAs, NICs), rack mounting/decommissioning servers, and managing cable infrastructure. 1+ year of experience with high-speed networking concepts and troubleshooting for Ethernet, HPE Slingshot, and InfiniBand fabrics, including link diagnostics, performance tuning, cable/fiber management, switch configuration, and fault isolation in large-scale HPC environments.