Senior Information Systems Security Engineer - Security Control Assessor (SCA)

Peraton Overview 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. Responsibilities Peraton is seeking an Information Systems Security Engineer (ISSE) – Security Control Assessors (SCA) to support an established federal enterprise cybersecurity program. The team will provide security engineering, control assessments, audit readiness, and governance, risk, and compliance (GRC) support across systems at multiple classification levels, including cloud environments and SaaS platforms.Location: Quantico, VAResponsibilities Assess security controls for accuracy and evidence Review system documentation and accept / reject documents Emphasis on coordination with System Owner, ISSE, 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 #FederalCyberISaaS Qualifications Required qualifications: Top Secret security clearance upon hire. The selected candidate must be eligible to obtain/maintain a TS/SCI clearance and successfully complete a polygraph examination if required by the customer. Must be a U.S. Citizen.Minimum 8 years each of: (1) secure design/analysis/test; (2) methods/standards for safeguard implementation; (3) creating/updating security test plans Must meet applicable DoW 8140.03 qualification requirements for Work Role 612 (Security Control Assessor), Advanced Proficiency level, through at least one of the following:Certification:CCISO - Certified Chief Information Security OfficerCISA - Certified Information Systems AuditorCISM - Certified Information Security ManagerCISSP - Certified Information Systems Security ProfessionalCISSP-ISSEP - Certified Information Systems Security Professional - Information Systems Security Engineering ProfessionalCySA+ - CompTIA Cybersecurity Analyst plusGSLC - GIAC Security Leadership CertificationGSNA - GIAC Systems and Network Auditor; OREducation: Master's degree or higher in Computer Science, Cybersecurity, Information Technology, Information Systems, Software Engineering, or a closely related field ORTraining: Qualifying DoD-approved training Target Salary Range $135,000 - $216,000. This represents the typical salary range for this position. Salary is determined by various factors, including but not limited to, the scope and responsibilities of the position, the individual’s experience, education, knowledge, skills, and competencies, as well as geographic location and business and contract considerations. Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Benefits Statement Peraton offers eligible employees a variety of benefits including medical, dental, vision, life, health savings account, short/long term disability, EAP, parental leave, 401(k), paid time off (PTO) for vacation, and company paid holidays. A full listing of available benefits can be viewed at . Application Statements The application period for the job is estimated to be 30 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates.By applying to this job, you are expressing interest in the role and the Company. During the review of your application, you may be required to participate in an on-camera interview, as well as participate in a process to verify your identity.Use of artificial intelligence (AI) tools of any kind during Peraton interviews is strictly prohibited unless the candidate has obtained prior written authorization. All interview responses must be the candidate’s own. EEO EEO: Equal opportunity employer, including disability and protected veterans, or other characteristics protected by law. Job SummaryRequisition ID: 2026-173393Position Category: Cyber SecurityClearance: Top Secret/SCI w/Poly