System Administrator

Citizenship: U.S. Citizen (required for access to DHS IT systems) Clearance: Must be able to obtain and maintain DHS Public Trust. Schedule: Full-time; 8-hour workdays with on-call support as needed. Hybrid Work: Lorton, VA roles may telework up to 2 days per week; 3 days onsite required (subject to mission needs) Travel: Occasional CONUS travel; local travel within 50 miles is not reimbursable Salary Range: $100-135k DOE Role Overview Revolutional is seeking an experienced SME Systems Administrator to support Department of Homeland Security (DHS). This role provides advanced technical leadership and mission-critical support for secure law-enforcement systems operating 24/7 across multiple locations. The Systems Administrator will manage and troubleshoot enterprise networks, servers, virtual environments, and security configurations while collaborating on the design and maintenance of the Continuity of Operations (COOP) site in Scottsdale, AZ. A shared responsibility among Harmonia, the government, and vendor partners. This position supports DHS’s mission while contributing to Revolutional's overarching goals: delivering premier technology services, driving mission-focused innovation, sustaining organizational excellence, and being an employer of choice for skilled professionals. Responsibilities Install, configure, administer, and maintain LAN/WAN infrastructure, servers, SANs, and network devices. Administer Active Directory (AD) , including: Promoting/demoting domain controllers, Troubleshooting DNS and DHCP issues, Managing GPO hierarchy and execution, Writing and maintaining PowerShell/Bash scripts for automation, Analyzing event logs and Windows system errors Plan, deploy, and maintain COOP and DR capabilities in coordination with the Government and vendor partners, ensuring redundancy and failover readiness. Patch and update servers and workstations; ensure security baseline compliance with DHS and FISMA standards. Apply and troubleshoot security hardening requirements and vulnerability remediation; support the ATO process and collaborate with the ISSO to resolve findings. Administer virtualization and storage platforms, including: VMware ESXi/vCenter – patching, updates, capacity planning, troubleshooting, Nutanix – cluster management and maintenance, NetApp – SAN/NAS configuration and data management Assist with Palo Alto firewall deployment and rule migration (from Cisco ASA 5506) to support network segmentation and high availability. Configure and troubleshoot Cisco and Dell switches; support VPN tunnels and IP transition projects (copper to fiber). Support lab environment setup and testing for patch validation and COOP simulation. Perform hardware replacement (hard drives, memory modules, power supplies, etc.). Maintain technical documentation, diagrams, and SOPs in repositories. Liaise with Revolutional and DHS technical leads to coordinate troubleshooting and mission support. Required Qualifications Bachelor’s degree in IT, Engineering, or related field OR +5 years equivalent experience. 10+ years enterprise IT systems/network administration experience. Proficiency in: Active Directory, DNS, DHCP, and GPO management PowerShell or Bash scripting for automation and administration VMware, Nutanix, and NetApp administration Windows Server and Linux system management Server/workstation patching and security remediation Security standards, ATO processes, and coordination with ISSO Cisco/Dell network devices and Palo Alto firewalls Excellent communication skills with both technical and non-technical stakeholders. Ability to work independently in high-pressure, mission-critical environments. Preferred Qualifications Experience supporting federal law enforcement IT systems or DHS-related operations. Hands-on experience assisting with the design or deployment of COOP/DR sites . Knowledge of Palo Alto firewall configuration and migration . Familiarity with Kubernetes or containerized applications (e.g., JSI platforms). Experience with static routing, VPN tunnels, and multi-site network resiliency . Familiarity with lab testing and replication validation processes. Prior experience supporting high-availability, 24/7 mission operations. Preferred Certifications Microsoft Certified Solutions Associate (MCSA) CompTIA Security+ (active certification preferred) PMP (Project Management Professional) Soft Skills Analytical and detail-oriented with strong initiative. Adaptability to changing mission needs and operational tempo. Collaborative approach with vendors (JSI, Palo Alto) and government teams. Physical Demands / Work Environment Must regularly lift/move up to 50 lbs.; occasionally up to 80 lbs. with hand truck/lift cart. Requires standing, kneeling, crouching, and crawling in server rooms. Normal hearing/vision required; moderate server-room noise #J-18808-Ljbffr Revolutional