Cybersecurity System Administrator - DMV

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.

• 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), 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.

• 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 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.

• 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.

• 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:

· Conduct ICS/SCADA system inventories following guidance including, but not limited to U.S. Army ICS Inventory Methodology and Unified Facilities Criteria (UFC) 4-010-06, Cybersecurity of Facility-Related Control Systems.

· Assist in the development and verification of documentation necessary to complete the DoD RMF assessment and authorization process.

· Implement Implementation of DoD Security Technical Implementation Guides (STIGs) on traditional Information Technology (IT) and Operational Technology (OT) systems.

· Conduct vulnerability scanning and document system vulnerabilities.

· Work in a team environment alongside other cybersecurity engineers and Risk Management Framework (RMF) analysts.

Required Education & Experience:

• ActiveTS/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

· Ability to process and operate application software, to include word-processing, spreadsheets and databases.

· Must…