Information System Security Officer (ISSO)

ResponsibilitiesPeraton is seeking an Information System Security Officer (ISSO) to work on a large-scale enterprise Information Technology (IT) program onsite in Washington D.C. This role will work closely with the team to monitor, assess, and maintain the security controls, ensuring that systems meet the necessary security requirements as outlined in the Risk Management Framework (RMF). Responsibilities include:Assist in the development and maintenance of RMF documentation and artifacts, ensuring proper security controls and safeguards are implemented for all systems.Collaborate with the ISSE and other engineering teams to assess and integrate security controls, providing security guidance for design and implementation efforts.Monitor and manage the security posture of systems, ensuring that security controls are effective and compliant with applicable standards and regulations.Conduct security assessments and audits, identifying vulnerabilities and recommending mitigations to strengthen the overall security posture.Review and maintain security-related documentation, ensuring all system components and information types are clearly described and aligned with security policies.Provide support for security authorization and accreditation processes, ensuring compliance with federal laws and regulations and assisting in the creation of securityQualificationsRequired:5 years with BS/BA; 3 years with MS/MA; 9 years experience may be considered in lieu of BS degree.Minimum 3 years’ experience in security engineering of Information SystemsTop Secret clearance with SCI eligibility is requiredProven ISSO experience across a large-scale enterprise Information Technology (IT) programExperience with Scrum methodologiesStrong written and verbal communicationAnalytical and problem-solving abilitiesTeamwork and collaborationOrganizational and multitasking skillsProficiency with Nesssus (ACAS), Splunk, STIGS, SCAP toolsDoD 8570.1-M IAT Level II certification (i.e., Security+ CE, CAP) requiredDesired:ITILv4 Foundation Certification desiredExperience with ServiceNow Proficiency with eMASS and XactaDoD 8570.1-M IAT Level III certification (i.e., CISSP or CISM) desiredPeraton OverviewPeraton 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$104,000 - $166,000. 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.EEOEEO: Equal opportunity employer, including disability and protected veterans, or other characteristics protected by law.Job SummaryRequisition ID: 2026-167952Position Category: Cyber SecurityClearance: Top Secret/SCI