Sr Linux Administrator

WHAT THIS CANDIDATE WILL BE DOING

·            Administer large-scale Linux environments supporting AI training, inference, and HPC workloads.

·            Own deep troubleshooting of OS, kernel, boot, package, firmware, driver, filesystem, service, and resource-consumption issues across bare-metal server fleets.

·            Diagnose failures across BIOS, BMC, PXE, DHCP, DNS, NFS, local disk, RAID, NVMe, systemd, and GPU driver stacks.

·            Build and maintain golden images, provisioning pipelines, configuration baselines, and post-deployment validation procedures.

·            Partner with network, platform, storage, and validation teams to isolate cross-domain failures affecting cluster readiness or job execution.

·            Investigate performance anomalies involving CPU, memory, NUMA, I/O, interrupts, process scheduling, and kernel tuning.

·            Automate repeatable administration and remediation tasks with Bash and Python.

·            Produce clear runbooks, failure signatures, and escalation criteria for recurring operational issues.

WHAT WE NEED TO SEE

·            7+ years delivering Linux administration in data center, cloud, AI, or HPC environments.

·            Deep expertise with RHEL, Ubuntu, Rocky, or similar enterprise Linux distributions.

·            Strong troubleshooting skill across boot flow, system logs, networking stack, authentication, service lifecycle, and hardware-software interaction.

·            Experience with GPU servers, out-of-band management, firmware coordination, and cluster node bring-up.

·            Hands-on knowledge of Ansible, PXE/iPXE, Kickstart, cloud-init, image lifecycle management, and configuration enforcement.

·            Strong shell scripting and Python-based automation capability.

·            Working knowledge of storage and network dependencies affecting Linux host health.

·            Ability to operate independently in ambiguous, high-severity production situations.