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 an individual with both 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, RHEL 7/8, VMware ESXi/vSAN infrastructure, web browsers, Adobe Acrobat, and other desktop applications; manage virtual machines and storage in a VMware vSAN environment; administer Microsoft SCCM, WSUS, Active Directory (AD), Group Policy (GPO), perform system patching and image deployment; integrate vendor systems and third‑party applications within a Windows ecosystem;
  
  operate and manage jump (bastion) hosts for secure remote access; coordinate with development and support teams to test system hardware/software and optimize performance; provide Tier 1‑3 support, troubleshoot incidents, maintain 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, deviation lists and ensure systems maintain Authority To Operate (ATO);
  
  provide FRCS cybersecurity engineering support and continuous monitoring per 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 IC‑CERT alerts and mitigate CAT 1/2/3 vulnerabilities.
• Compliance & Documentation:
  Maintain up‑to‑date security artifacts, plans and policies per 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 re‑authorization activities, including 5‑day on‑site assessments; 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.
• ICS/SCADA System Responsibilities:
  Conduct inventories following U.S. Army methodology and UFC 4‑010‑06; assist in developing and verifying documentation for DoD RMF assessments; implement STIGs on IT and OT systems; conduct vulnerability scanning and document vulnerabilities; collaborate with other cybersecurity engineers and RMF analysts.

• Active TS/SCI with polygraph clearance required.
• Minimum 3+ years of experience with a Master’s Degree in IT, Risk Management or Cybersecurity; or 5+ years with a Bachelor’s Degree; or 8+ years with an Associate’s Degree; or 11+ years with a High School Diploma.
• Proficiency in application software (word‑processing, spreadsheets, databases).
• Must meet DoDD 8570.01 and DoD 8570‑M IAM/IAP Level 2 requirements.
• Documented training in network infrastructure (Cisco), Microsoft Windows.
• Experience implementing cybersecurity requirements in industrial control systems (building management, electronic security, fire alarm, power management, etc.).

• DoD 8140 IAT Level II certification (e.g., Security+, CCNA Security, CySA+).
• TS/SCI clearance required.
• 5+ years of experience in DoD RMF cybersecurity and system administration.
• Experience with IA tools and processes: STIGs, Nessus, SCAP, ACAS, vulnerability management.
• Demonstrated knowledge of Windows Server/Client, RHEL, VMware.
• Knowledge of cybersecurity frameworks:…