Senior ISSE Lead — RMF/ICD 503 A&A Expert

General Dynamics Information Technology (GDIT); Washington (District of Columbia); On-site; USD 164,000 - 207,000; Full time

Benefits offered by this job

401K with company match

Comprehensive health and wellness

Paid education and certifications

Paid vacation and holidays

Job summary

General Dynamics Information Technology (GDIT) seeks a Lead Information Systems Security Engineer (ISSE) to drive security accreditation and RMF processes across multiple programs on customer sites in the D.C. area.

You will lead ISSE teams, liaison with customer security and senior leadership, and own A&A documentation and artifacts. The role requires 10+ years in cybersecurity or security engineering, TS/SCI with Polygraph, and IASAE II certification, with opportunities for growth and access

Qualifications

• 10+ years of cybersecurity, information assurance, or security engineering experience.
• Active TS/SCI with Polygraph clearance.
• DoD 8570.01-M IASAE II certification.
• Experience mentoring or leading security teams.
• Experience leading A&A/ATO efforts for large or complex systems.
• Mastery of RMF, ICD 503, and IC accreditation processes.
• Strong technical writing expertise for SSPs, CONOPS, POA&Ms, and audit docs.

Responsibilities

• Lead security accreditation across RMF lifecycle guiding ISSMs, SCAs, PMs, and engineering teams.
• Drive systems to achieve ATD IATT ATO and ensure gate readiness.
• Serve as primary contact for customer security, audit teams, and senior leadership.
• Mentor junior engineers and provide technical oversight across projects.
• Develop, review, and execute RMF/ICD 503 docs (SSP, CONOPS, POA&Ms).
• Support ISCM activities and improve security documentation.

Skills

Information Security

POA&M

Risk Assessments

Education

DoD 8570 IASAE II certification

Job description

General Dynamics Information Technology (GDIT) seeks a Lead Information Systems Security Engineer (ISSE) to drive security accreditation and RMF processes across multiple programs on customer sites in the D.C. area.

You will lead ISSE teams, liaison with customer security and senior leadership, and own A&A documentation and artifacts. The role requires 10+ years in cybersecurity or security engineering, TS/SCI with Polygraph, and IASAE II certification, with opportunities for growth and access