Security Engineer - ISSE

Welcome page Returning candidate? Log back in! Security Engineer - ISSE Job Locations US-CO-Colorado Springs Requisition ID 2026-166750 Position Category Cyber Security Clearance Top Secret/SCI Responsibilities Peraton is seeking incumbent and external qualified candidates to support North American Aerospace Defense Command (NORAD) Cheyene Mountain Complex (NCMC) – Integrated Tactical Warning/Attack Assessment (NCMC-ITW/AA) and Space Support Contract III (NISSC III).    Please note that this is contingent upon contract award, with an anticipated decision expected mid to late 2026    Qualified candidates will help operate, maintain, and sustain critical national mission systems to deliver resilient strategic threat warning and space capabilities as part of a world-wide architecture, providing strategic warning that our nation depends on during a conflict. This program will provide an opportunity to exploit the capabilities inherent in our diverse national systems to better meet the needs of the national command authority and warfighters to detect, track, and respond to strategic threats through 2030 and beyond   The Security Engineer / ISSE will support cybersecurity engineering, system security integration, risk management, and compliance activities supporting mission-critical NORAD and USSPACECOM operations within the Cheyenne Mountain Complex environment. This role will support security engineering efforts across complex operational and developmental environments supporting space, missile warning, command-and-control, and enterprise mission systems. The ideal candidate will possess experience integrating cybersecurity requirements into system architecture, engineering, testing, and operational sustainment activities within classified DoD environments while collaborating closely with systems engineering, software development, integration, and operations teams to improve system security, mission readiness, and operational resilience.  Responsibilities Support cybersecurity engineering activities throughout the system lifecycle including design, integration, testing, deployment, sustainment, and modernization  Support implementation and integration of cybersecurity controls, security architectures, and defensive technologies across mission systems and enterprise environments  Assist with Risk Management Framework (RMF) activities including security control implementation, assessment support, POA&M management, and compliance documentation  Support system hardening, vulnerability assessment, patch management, and security remediation activities  Collaborate with systems engineering, software development, integration, and operations teams to ensure cybersecurity requirements are incorporated into system designs and deployments  Support security testing, verification and validation activities, vulnerability scanning, and operational security assessments  Analyze and troubleshoot cybersecurity issues, system vulnerabilities, and operational security incidents  Develop and maintain cybersecurity documentation including SSPs, security procedures, architecture artifacts, and technical assessments  Support continuous monitoring, audit readiness, and cybersecurity compliance activities within classified environments  Participate in Agile development, DevSecOps, and integration activities supporting secure system delivery and operational readiness  Contribute to continuous improvement initiatives focused on cybersecurity posture, system resilience, and mission assurance  Qualifications Required Qualifications Bachelor’s degree with 5+ years of relevant experience; OR Master’s degree with 3+ years of relevant experience. Additional four (4) years of experience may be considered in lieu of degree  Active Top Secret clearance with SCI eligibility required, ability to obtain and maintain TS/SCI access required  Experience supporting cybersecurity engineering or ISSE activities within DoD, Intelligence Community, space, missile...