Cybersecurity System Administrator - DMV Security Clearance

Overview

M.C. Dean is seeking a highly skilled Cybersecurity System Administrator to support a secure operational technology environment by integrating advanced system administration with proactive cybersecurity operations. This dual-role position requires hands-on technical expertise in managing modern enterprise IT systems and a deep understanding of federal cybersecurity frameworks and risk management.

• System Administration Duties:
  Install, configure, upgrade, and maintain enterprise systems including Windows Server 2019/2022, Windows 10, and RHEL 7/8; manage VMware ESXi / vSAN infrastructure; administer Microsoft SCCM, WSUS, Active Directory (AD), Group Policy (GPO), and perform system patching and image deployment; integrate and maintain vendor systems and third-party applications within a Windows ecosystem; operate and manage jump (bastion) hosts for network segregation and secure remote access;
  
  coordinate with development and support teams to test system hardware/software and optimize performance; provide Tier 1-3 support, troubleshoot incidents, and maintain operational resilience via regular backups and recovery plans; load PKI certificates and maintain change management documentation and incident logs.
• Cybersecurity Operations:
  Serve as the Information System Security Manager (ISSM) for all assigned systems; monitor networks for real-time threat indicators; investigate and respond to security events; implement and operate cybersecurity tools such as ACAS, NESSUS, SCAP, and STIG Checklists; conduct and remediate vulnerability scans; follow DISA STIGs and IAVA compliance; manage POA&Ms and deviation lists, ensuring systems maintain Authority to Operate (ATO);
  
  provide FRCS cybersecurity engineering support and continuous monitoring in accordance with DoD and Army standards; perform penetration testing, threat analysis, and security risk assessments in lab/test environments; collaborate with stakeholders to improve system hardening, respond to ICS-CERT alerts, and mitigate CAT 1/2/3 vulnerabilities.
• Compliance & Documentation:
  Maintain up-to-date security artifacts, plans, and policies as required under RMF, NIST SP 800-series, FISMA, and FedRAMP; load documentation and scan data into the A&A Asset Manager; facilitate FISMA-required annual reviews (e.g., Contingency Plans, Security Controls); support system reauthorization activities, including 5-day on-site assessments if required; educate end users on security best practices and threat awareness.
• Work Conditions & Travel:
  Primarily on-site; periodic travel may be required for assessments or installations; participation in on-site assessments up to 5 days in duration; occasional after-hours support for mission-critical operations.
• Position Responsibilities (ICS/SCADA):
  Conduct ICS/SCADA system inventories following guidance including U.S. Army ICS Inventory Methodology and UFC 4-010-06; assist in the development and verification of documentation necessary to complete the DoD RMF assessment and authorization process; implement DoD STIGs on IT and OT systems; conduct vulnerability scanning and document system vulnerabilities; work in a team with cybersecurity engineers and RMF analysts.

• Active TS/SCI w/ polygraph clearance is required.
• 3+ years of experience with a Master’s Degree in Information Technology, Risk Management, Cybersecurity.
• 5+ years of experience with a Bachelor’s Degree in Information Technology, Risk Management, Cybersecurity.
• 8+ years of experience with an Associate’s Degree in Information Technology, Risk Management, Cybersecurity.
• 11+ years with a High School Diploma.
• Must meet DoD 8570.01/8570-M requirements for IAM Level 2, IAT Level 2, or IASAE Level 2; documented training in network infrastructure (Cisco) and Microsoft Windows; experience on government and/or commercial projects implementing cybersecurity requirements in ICS (e.g., building management, electronic security, fire alarm, etc.).

• DoD 8140 IAT Level II certification (e.g., Security+ CE, CCNA Security, CySA+).
• TS/SCI clearance is required.
• 5+ years of experience in DoD RMF cybersecurity and system…