Senior Proxmox Cluster Administrator

Welcome page Returning candidate? Log back in! Senior Proxmox Cluster Administrator Job Locations US-MD-College Park Requisition ID 2026-166644 Position Category Information Technology Clearance Top Secret/SCI w/Poly Responsibilities Peraton Labs is seeking a poly cleared Senior Proxmox Cluster Administrator to own day-to-day operations and lifecycle management of a mission-critical Proxmox virtualized environment supporting a complex Multi-OS research infrastructure. You will work closely with Peraton team members, sub-contractors, as well as directly with our Maryland-based customer, in a fast-paced environment. This role is hands-on and operationally focused, with responsibility for platform reliability, security posture, and automation maturity. Exceptional candidates for this role may also have additional experience in Linux Administration/Engineering and/or Automation/DevSecOps Engineering. This position requires full-time on-site work at a customer site near College Park, MD. Key responsibilities may include:Administer and sustain Proxmox VE clusters (quorum/corosync, HA policies, node health, upgrades, scaling, capacity forecasting)Standardize VM/LXC provisioningLead incident response and complex troubleshooting across compute/network/storageManage Proxmox host networking (Linux bridges, bonding, VLAN trunking, segmented management planes)Own backup/restore and DR readiness for virtualization workloads, including periodic restore validationMaintain platform documentation (runbooks, SOPs, diagrams, change records) and support audit-ready artifacts as required by the programPartner with Peraton internal, sub-contractors, and government support teams to onboard workloads safely and support continuous improvementsAdditional ability to provide support in one or more of the following:Maintain secure and standardized Linux services and baselines supporting the enclave (hardening, platform services, lifecycle/patch coordination, reliability improvements)Develop automation to reduce toil and drift (Ansible/Git-based workflows, provisioning/patch/validation pipelines, compliance evidence automation) *This position may be eligible for an increased sign-on bonus. Eligibility, bonus amount, and applicable terms and conditions will be discussed during the recruiting process* #MDFSP#PLABS26 Qualifications Required qualificationsMinimum of 12+ years of experience and a Bachelors, 10+ years and a Masters, or 8+ years and a Ph.D. in Computer Science or related discipline. In lieu of a Bachelors degree, 4 additional years of experience is required for a total of 16 years.Senior, hands-on experience administering Linux infrastructure in production (RHEL/Ubuntu or similar)Production experience operating a virtualization platform at scale (Proxmox VE preferred)Automation proficiency using Ansible and scripting in Bash and/or PythonStrong foundational knowledge in:Cluster/HA concepts (quorum, failover, maintenance/rollback)Virtualization performance troubleshooting (CPU/Memory/IO contention, capacity planning)Networking (VLANs, bonding, segmentation)Storage and data protection (ZFS and/or distributed storage, backup/restore operations)At least one active technical certification in: systems engineering, information security, networking, system administration, virtualization, IT systems management, or project management. (e.g., Security+, CISSP/CISM, CASP+, CCNA/CCNP, RHCSA/RHCE, VMware VCP, ITIL, PMP, etc.)US Citizenship with Active/current TS/SCI security clearance with a current polygraph is required Preferred qualificationsDeep Proxmox experience related to HA tuning, corosync troubleshooting, multi-cluster scaling, and lifecycle upgradesAdvanced virtualization capabilitiesFamiliarity with DevSecOps/IaC best practicesExperience with security/compliance operations in controlled environments (STIG/RMF/NIST-aligned practices) and vulnerability remediation workflowsExperience with observability tooling (Prometheus/Grafana,...