Information System Security Officer (ISSO), Journeyman

We are seeking a highly skilled and innovative Information System Security Officer (ISSO), Journeyman to join our team in the greater DMV area, supporting the Army National Guard., Maintain eMASS records for assigned systems: update RMF artifacts, POA&Ms, STIG checklists, scan results, and accreditation documentation.

• Coordinate with system owners, engineers, SOC, and compliance staff to document control implementation, vulnerability remediation, and configuration baselines.
• Review system changes for cybersecurity implications and support A&A and reauthorization activities.
• Orchestrate scanning and patching cycles for PMcontrolled environments and validate remediation evidence.
• Prepare security status reports, respond to accreditation/inspection data calls, and maintain auditquality documentation.
• Provide daytoday IA policy guidance, training coordination, and account validation support for system teams.
• Track POA&M progress, verify closure evidence, and assist in remediation prioritization with stakeholders.
• Maintain configuration/change records and support continuous monitoring activities and control validation.

#ENOCS

• 2 years with BS/BA; 0 years with MS/MA; 6 years with no degree
• Clearance: Active TS/SCI clearance.
• Candidate must meet ONE of the following:

• Bachelor's degree in Cybersecurity, Data Science, Information Systems, Information Technology, Software Engineering, or a related field; OR
• Relevant DoD/military training (examples: 53125B40C46; Information Systems Security Manager (Intermediate) Playlist); OR
• Relevant professional certification or equivalent experience (examples: GMON, CASP+, CCISO, CCSP, CGRC/CAP, CISSO, Cloud+, GCSA, GSEC, Security+, SSCP).

• Required experience and skills:

• Experience supporting RMF/A&A, ISSO/ISSM functions, or system security administration in DoD or large enterprise environments.
• Handson experience with eMASS (or equivalent RMF tools), POA&M management, STIG checklists, vulnerability scanning (ACAS/Nessus), and evidence uploading.
• Familiarity with STIG/CSG application, patch management workflows, scanning/validation cycles, and control implementation documentation.
• Strong documentation, tracking, and communication skills to respond to data calls and produce security status reports.

• Desired:

• Prior DoD/ARNG ISSO or eMASS management experience.
• Experience automating evidence collection, integrating scanning pipelines, or improving RMF workflow efficiencies.

Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world's leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land, sea, space, air, and cyberspace. The company serves as a valued partner to essential government agencies and supports every branch of the U.S. armed forces. Each day, our employees do the can't be done by solving the most daunting challenges facing our customers. Visit peraton.com to learn how we're keeping people around the world safe and secure. Target Salary Range