Sr Information Systems Security Engineer (ISSE) - SCA, Advisor - TS/SCI w/poly

Peraton is seeking an Information Systems Security Engineer – Security Control Assessors (SCA) to support its Federal Strategic Cyber programs.

In this role, you will:

• Assess security controls for accuracy and evidence
• Review system documentation and accept / reject documents
• Emphasis on coordination with System Owner, ISSE, and ISSO to fix items that need rework
• Emphasis on continuously monitoring systems across ISSM portfolio to focus on quality throughout SAA lifecycle
• Oversee and coordinate activities within the Prepare step, ensuring roles, responsibilities, and risk management strategies are clearly defined and maintained.
• Guide system categorization efforts to ensure all information systems are appropriately classified based on mission/business impact and regulatory requirements.
• Advise on the selection, tailoring, and documentation of security controls aligned with system categorizations, risk appetite, and compliance requirements.
• Oversee the implementation of technical, operational, and management controls throughout system and application lifecycles, with a particular focus on quality and completeness of all deliverables.
• Ensure comprehensive security control assessments are planned, executed, and documented to validate the effectiveness of implemented safeguards.
• Prepare risk management documentation for system authorization and executive decision-making.
• Direct ongoing monitoring and continuous assessment activities, collecting metrics to adjust security strategies and ensure sustained compliance.
• Serve as a principal technical advisor on cybersecurity, bringing subject-matter expertise to risk analysis, incident response, system remediation, and audit support efforts.
• Foster a culture of security awareness, providing technical guidance and training to both team members and stakeholders.
• Track, report, and communicate status, risks, and improvement opportunities related to security engineering activities to leadership and stakeholders.
• Maintain up-to-date knowledge of RMF, NIST guidance, and industry best practices in support of continuous process improvement.