Senior ISSO: RMF & Continuous Monitoring Lead (On-Site)

Peraton; Maryland, United States, Northern America, Americas; Hybrid; USD 146,000 - 234,000; Full time

Job summary

Peraton Labs is seeking a poly cleared Information System Security Officer to own day-to-day security operations in a mission-critical, highly complex HPC environment. You will lead RMF, continuous monitoring, and authorization artifacts, collaborating with subcontractors and customers to ensure compliance.

This on-site role in Laurel, MD requires strong risk communication, documentation discipline, and incident response capabilities, with a potential sign-on bonus discussed during recruiting.

Qualifications

• 6+ years of experience with computer science/IT or related field.
• 4+ years of experience supporting DoD/IC or government systems.
• Hands-on RMF task execution and authorization artifacts.
• Strong knowledge of NIST SP 800-53 mappings to implementations.
• Active TS/SCI clearance with polygraph required.

Responsibilities

• Act as the ISSO across development, operations, and modernization.
• Execute and maintain RMF activities and continuous monitoring.
• Maintain SSP, control narratives, diagrams, and artifacts.
• Operate continuous monitoring: vulnerability management, config compliance, patch coordination.
• Review and approve security changes; validate configurations after upgrades.
• Support incident response and post-incident lessons learned.
• Ensure least privilege and audit compliance; account management oversight.
• Translate security requirements into testable guidance for engineering.

Skills

RMF

NIST SP 800-53

Vulnerability management

Linux

Risk communication

Documentation discipline

TS/SCI clearance

Education

B.S. in Computer Science/IT/related field

M.S. in related field

Tools

eMASS

Job description

Peraton Labs is seeking a poly cleared Information System Security Officer to own day-to-day security operations in a mission-critical, highly complex HPC environment. You will lead RMF, continuous monitoring, and authorization artifacts, collaborating with subcontractors and customers to ensure compliance.

This on-site role in Laurel, MD requires strong risk communication, documentation discipline, and incident response capabilities, with a potential sign-on bonus discussed during recruiting.