ISSO — RMF Security Lead for DoD HPC (On‑Site Laurel)

Peraton; Laurel (MD); On-site; USD 104,000 - 166,000; Full time

Job summary

Peraton Labs in Laurel, MD seeks an Information System Security Officer to own RMF implementation and continuous monitoring for a mission-critical HPC environment. You will maintain authorization artifacts, support incident response, and guide engineering teams on secure configurations.

The role requires TS/SCI with a current polygraph and is based on-site in Laurel, Maryland. A strong background in DoD/government systems and security controls is essential.

Qualifications

• 6+ years of experience and a BS in computer science, IT, or related technical discipline; MS and 4+ years of experience. Four years of additional experience is required in lieu of a Bachelors’ degree for a total of 10 years of experience
• 4+ years of experience supporting DoD/IC or government systems
• Hands-on experience executing RMF tasks and maintaining authorization artifacts (SSP, POA&M, continuous monitoring evidence)
• Strong working knowledge of NIST SP 800-53 controls and how they map to technical implementations and procedures
• Experience with vulnerability and configuration compliance workflows
• Familiarity with Linux-based enterprise environments and common hardening concepts
• Ability to communicate risk clearly to both technical engineers and non-technical leadership
• Active TS/SCI security clearance with a current polygraph is required.

Responsibilities

• Act as the ISSO supporting the system security lifecycle across development, operations, and modernization
• Execute and maintain RMF activities (control implementation oversight, evidence collection, assessment support, POA&M management, continuous monitoring)
• Maintain security authorization artifacts (SSP, control narratives, diagrams, inheritance/leverage controls, CM plan, incident handling plan, contingency artifacts, user/admin procedures)
• Operate continuous monitoring: vulnerability management, config compliance, patching coordination, scan result triage, risk acceptance, and remediation verification
• Review and approve security-relevant changes through configuration/change control and validate security configurations after major upgrades
• Support incident response and reporting: participate in investigations, coordinate containment actions, preserve evidence, and contribute to post-incident lessons learned
• Ensure least privilege/access governance: account management oversight, privileged access workflows, periodic access reviews, and audit compliance requirements
• Translate security requirements into implementation guidance that engineering teams can operationalize (clear, testable, and automatable where possible)

Skills

RMF knowledge

Vulnerability management

Linux administration

Risk communication

Documentation

TS/SCI clearance

Container security

Education

Bachelor's degree in CS/IT or related field

Master's degree (MS) preferred

Tools

eMASS

Job description

Peraton Labs in Laurel, MD seeks an Information System Security Officer to own RMF implementation and continuous monitoring for a mission-critical HPC environment. You will maintain authorization artifacts, support incident response, and guide engineering teams on secure configurations.

The role requires TS/SCI with a current polygraph and is based on-site in Laurel, Maryland. A strong background in DoD/government systems and security controls is essential.