Information Systems Security Engineer Lead

Peraton • Washington, DC

3d • Onsite

About The Position

Peraton is seeking an ISSE Lead to support our customer onsite in Washington D.C.
Design, develop, and implement security solutions, ensuring they are embedded throughout the system lifecycle (from design to deployment) rather than added later.
Lead the implementation of the Risk Management Framework (RMF), including system categorization, security control selection, and tailoring.
Prepare and maintain security documentation (e.g., System Security Plan - SSP) for Authorization to Operate (ATO).
Perform vulnerability scans, analyze risks, and track remediation efforts using tools like Splunk, Tenable, and Trellix.
Supervise and mentor security professionals, assigning tasks and coordinating activities.
Act as a Subject Matter Expert (SME) to advise on security impacts, policy interpretation, and technical solutions for complex problems.
Oversee ongoing security testing and ensure compliance with security policies is maintained.
Brief technical plans to leadership
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.

Requirements

• Minimum of 12 years with BS/BA; 16 years of work experience will be considered in lieu of a bachelor's degree.
• Strong background in networking (TCP/IP, firewalls, VPNs), cloud security (AWS/Azure), Kubernetes, and DevSecOps.
• Deep understanding of NIST SP 800-161, NIST RMF, FedRAMP, Common Criteria, ATO package development, and cybersecurity compliance (STIGs).
• Hands-on experience with ACAS, SCAP, HBSS, and CyberArk tools
• Proven experience in leading teams, mentoring, and conducting security assessments.
• Must have a current DoD 8570.1-M IAT Level III certification (SecurityX (CASP), GCIH, CISA, CISSP)
• Must possess a Top Secret with SCI eligibility

Responsibilities

• Design, develop, and implement security solutions, ensuring they are embedded throughout the system lifecycle (from design to deployment) rather than added later.
• Lead the implementation of the Risk Management Framework (RMF), including system categorization, security control selection, and tailoring.
• Prepare and maintain security documentation (e.g., System Security Plan - SSP) for Authorization to Operate (ATO).
• Perform vulnerability scans, analyze risks, and track remediation efforts using tools like Splunk, Tenable, and Trellix.
• Supervise and mentor security professionals, assigning tasks and coordinating activities.
• Act as a Subject Matter Expert (SME) to advise on security impacts, policy interpretation, and technical solutions for complex problems.
• Oversee ongoing security testing and ensure compliance with security policies is maintained.
• Brief technical plans to leadership

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level