Systems Administrator

Overview

VTG is seeking a System Administrator
, experienced with RHEL, with hands‑on networking and cybersecurity compliance skills to maintain Linux systems and ensure DoD STIG/SCAP compliance using ACAS (Nessus) scanning. This position is responsible for system hardening, vulnerability management, data transfer operations, and audit readiness in a secure, off‑line environment. The Systems Administrator will work with a small team based out of Manassas, VA
. This role will be performed primarily in a classified space, requiring in‑office work 75%+ of the time.

Serve as a System Administrator responsible for deploying, patching, and maintaining RHEL 8/9 servers and workstations. Automate with Ansible, Bash, and Python; perform ACAS (Nessus) scans weekly or monthly; triage, remediate, and document findings. Apply DoD STIGs using SCAP content (OpenSCAP, SCC, Ansible STIG roles). Run OSCAP compliance scans; generate SCAP/XCCDF reports for auditors. Maintain POA&M (Plan of Actions & Milestones) for open vulnerabilities.

Support eMASS entries and RMF (Risk Management Framework) workflows.

• 4+ years of experience as a System Administrator (or similar role)
• IAT Level II (DoD 8570 Qualification Requirements)
• Extensive experience using Linux (RHEL 7, 8,
  9)
• Excellent organizational, verbal and written communication skills.
• Experienced with ACAS
• Initiative, innovation, and resourcefulness.
• US Citizen with current SECRET Clearance

• RHEL / LINUX Administration
• Understanding of networking to include IDS, IPS with Forti Gate systems
• Evaluate STIG experience
• Understanding of software vulnerability assessment and mitigation
• Bachelor’s degree
• Familiarity with the NIST Security Controls
• IAT Level II (DoD 8570 Qualification Requirements)
• Understanding of Cybersecurity and Compliance

• Some work may be performed remotely. Occasional travel 5% of the time.