Cyber Systems Administrator – Control Systems Cybersecurity

Agile Defense is seeking a Cyber Systems Administrator (Lead) to provide on-site cybersecurity leadership for a federal customer’s building and facility control systems in Columbus, OH. In this role, you will run daily cyber operations, coordinate with a government remote cybersecurity team, and guide RMF execution and documentation to support security readiness and compliance.

What you will do

• Lead daily cybersecurity operations for facility and control systems, including patching, hardening, monitoring, and compliance activities.
• Supervise and mentor two RMF Specialists, reviewing their work and building their technical capability.
• Serve as the on-site liaison between the facility team, OEM vendors, and the government’s remote cybersecurity team to ensure alignment with enterprise security requirements.
• Run vulnerability scans, analyze findings, and drive remediation through completion.
• Oversee creation of RMF documentation and security artifacts, ensuring accuracy and audit readiness.
• Support system categorization and risk assessment by translating local technical details for stakeholders working off-site.
• Build and maintain a reliable inventory of systems, software, and documentation.
• Enforce cybersecurity best practices and separation of duties across the team.
• Represent on-site readiness during recurring customer meetings, workshops, and program reviews.
• Lead cyber phase-in and transition efforts during ramp-up to ensure smooth collaboration with the broader government cyber organization.

Required qualifications

• Meet DoD 8140.03 certification requirements for this role (IAM Level I), such as Security+ CE.
• Complete role-based computing environment certification before privileged access within 180 days of the first day.
• Hands-on cybersecurity or systems administration experience in a federal, DoD, or similarly complex environment.
• Experience supporting the RMF process end-to-end.
• Experience leading or mentoring cybersecurity staff.
• Bachelor’s degree not required; equivalent experience, technical training, or industry certifications will be considered.
• Relevant experience may include military service, technical roles in government or industry, or non-traditional career paths.
• Working knowledge of federal cybersecurity frameworks: FIPS 199/200, NIST 800-53, NIST 800-82, CNSSI 1253.
• Experience with DoD cybersecurity tools for vulnerability scanning, compliance checking, and endpoint security.
• Strong vulnerability management capabilities, including scanning, triage, remediation, and tracking.
• Clear, audit-ready technical writing.
• Ability to coordinate with program managers, remote cybersecurity stakeholders, security officers, engineers, and vendors.
• Must be a US Citizen with the ability to obtain and maintain a Secret security clearance.

Technologies and frameworks

• DoD 8140.03, IAM Level I, Security+ CE
• RMF, FIPS 199/200, NIST 800-53, NIST 800-82, CNSSI 1253
• Linux, FedRAMP, Zero Trust, Purdue Enterprise Reference Architecture

Preferred skills

• DoD 8140 IAM Level II certification.
• Experience with OT/ICS/SCADA or facility-related control systems (for example, building automation, advanced metering).
• Knowledge of the Purdue Enterprise Reference Architecture.
• Experience supporting ATO or ATC efforts.
• Familiarity with FedRAMP and Zero Trust principles.
• Linux administration experience.
• Prior DLA customer experience.

Location and clearance

• Location: Columbus, OH (Onsite)
• Clearance: Must be a US Citizen with the ability to obtain and maintain a Secret security clearance

Agile Defense core values

• Happy: Be Infectious. Happiness multiplies and creates a positive and connected environment.
• Helpful: Be Supportive. Being helpful is the foundation of teamwork and collaboration.
• Honest: Be Trustworthy. Honesty serves as a compass for transparent communication and ethical conduct.
• Humble: Be Grounded. Success is not achieved alone, and humility supports mutual respect and learning.
• Hungry: Be Eager. A drive for excellence fuels innovation and continuous improvement.
• Hustle: Be Driven. Commitment to going above and beyond to advance the mission.