Information System Security Officer (ISSO)

Peraton is seeking a skilled Information Systems Security Officer (ISSO) to support the security posture and authorization requirements of physical security systems. The ISSO will maintain operational security compliance, support Authorization to Operate (ATO) activities, and collaborate closely with system stakeholders, Information System Security Engineers, and System Administrators. This role requires deep understanding of the NIST Risk Management Framework (RMF), continuous monitoring, and compliance with applicable cybersecurity regulations.

The ideal ISSO will manage daily security operations for assigned systems and ensure secure configuration, incident response readiness, and lifecycle management of authorization documentation.

Location: Washington, D.C.

Day to Day Roles and Responsibilities:

• Develop, implement, and maintain information security policies, procedures, and standards
• Prepare, review, and maintain NIST SP 800-53 based ATO documentation packages
• Coordinate with system owners and engineers on the production and collection of security artifacts
• Monitor information system environments and manage security posture across authorization boundaries
• Conduct risk assessments and ensure compliance with applicable federal and organizational security standards
• Track and maintain accurate device inventory in InfraLink
• Oversee physical/environmental protection, incident handling, personnel security, and awareness training
• Coordinate and approve changes to system hardware, software, or firmware with the ISSM and AO/DAO
• Ensure audit logs are collected, reviewed, and retained; report any anomalies
• Support system recovery efforts, ensuring security controls are reinstated
• Maintain and test incident response and continuity of operations plans (COOP)
• Notify the ISSM of any system changes that may impact the authorization decision
• Perform continuous monitoring activities and update security documentation as needed

Basic Qualifications:

• Bachelor of Science degree and 5 years of professional experience, or High school diploma and 9 years of professional experience
• Minimum 5 years of direct experience developing and maintaining NIST SP 800-53 ATO packages
• Possess at least one of the following industry-recognized certifications:
• Security+ CE
• Certified Information Security Manager (CISM)
• Certified Information Systems Security Professional (CISSP)
• CompTIA Advanced Security Practitioner (CASP+)

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.