Information Systems Security Engineer Lead

Peraton • Washington, DC

1d • 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

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
• Lead the implementation of the Risk Management Framework (RMF)
• 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