ISSO – RMF & Security Authorization Lead (TS Clearance)

Peraton; United States; On-site; USD 104,000 - 166,000; Full time

Job summary

Peraton is seeking a knowledgeable security professional to support information assurance across multiple environments. You will act as ISSO/ISSM, execute RMF activities, and maintain artifacts such as SSPs and control narratives while coordinating with ISO and PM teams.

You will oversee continuous monitoring, vulnerability management, and configuration controls, and support incident response and post-incident reviews. Strong communication and collaboration with government partners are essential.

Qualifications

• Active Top Secret clearance with SCI eligibility is required.
• 5 years with BS/BA; 3 years with MS/MA; 4 additional years of experience may be considered in lieu of degree.
• Security+ or equivalent certification (DoD 8570 IAM Level II).
• Experience with SAP assessments and authorizations.
• 3+ years with Authority to Operate (ATO) & continuous monitoring, POA&Ms, SA & NIST 800-37/800-53 Rev4/Rev5.
• Experience with SCAP, STIGs, and other compliance tools.
• Proven written and verbal communication skills.

Responsibilities

• Assist the ISSM with information assurance efforts across environments.
• Perform ISSO roles and responsibilities per JSIG and regulations.
• Execute and maintain RMF activities: control implementation, evidence collection, POA&M management, continuous monitoring.
• Maintain security artifacts: SSP, control narratives, diagrams, CM plan, incident handling, contingency docs.
• Oversee continuous monitoring: vulnerability management, config compliance, patching, triage, risk acceptance, remediation verification.
• Review and approve security changes; validate configurations after upgrades.
• Support incident response and reporting: investigations, containment, evidence preservation, lessons learned.
• Ensure least privilege and access governance: account oversight, privileged workflows, access reviews.

Skills

Active TS clearance with SCI

Security+ or DoD 8570 IAM Level II

SAP assessments/authorizations

ATO process & continuous monitoring

NIST 800-37/800-53 Rev4/Rev5

SCAP & STIGs experience

Strong written & verbal communication

Education

BS/BA in a relevant field

MS/MA in a related field

Tools

Splunk

ACAS

Nessus

SCAP

STIGs

Job description

Peraton is seeking a knowledgeable security professional to support information assurance across multiple environments. You will act as ISSO/ISSM, execute RMF activities, and maintain artifacts such as SSPs and control narratives while coordinating with ISO and PM teams.

You will oversee continuous monitoring, vulnerability management, and configuration controls, and support incident response and post-incident reviews. Strong communication and collaboration with government partners are essential.