Senior on-call systems administrator maintaining a large-scale Linux cluster for a government mission: installing COTS/GOTS/FOSS software, day-to-day operations, monitoring, and problem resolution across compute, network, memory, and storage, while enforcing security compliance. Core stack: Linux CLI, Bash/Python, Red Hat Satellite, VMware ESXi, SaltStack/Ansible, Splunk, Docker, and Kubernetes.
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