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

General Dynamics IT; Washington (District of Columbia); On-site; USD 170,000 - 210,000; Full time

Benefits offered by this job

401K match

Health & wellness

Career mobility

Education sponsorship

Paid vacations

Job summary

General Dynamics Information Technology, Inc. seeks a senior Lead Information Systems Security Engineer (ISSE) to guide RMF/ICD 503 security lifecycle across complex programs.

You’ll coordinate with ISSMs, PMs, and engineering teams to ensure accreditation readiness and secure architectures. You will own A&A activities, provide executive-level security briefings, and mentor engineers while delivering robust SSPs, CONOPS, and audit artifacts for demanding DoD environments.

Qualifications

• Technical Training, Certification(s) or Degree + 10 years.
• 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 for large or complex systems.
• Mastery of RMF, ICD 503, and IC accreditation processes.
• Strong technical writing in SSPs, CONOPS, POA&Ms, and audit documentation.
• Ability to translate complex engineering details into security artifacts and briefings.
• Location: On Customer Site.

Responsibilities

• Serve as the lead engineer for security accreditation across the RMF/ICD 503 lifecycle.
• Drive systems to achieve ATD → IATT → ATO with readiness at each gate.
• Act as the primary contact for customer security organizations, audit teams, and senior leadership.
• Mentor junior engineers and provide technical oversight across multiple projects.
• Conduct reviews of system architectures and document security components for SSPs/CONOPS.
• Develop, review, and execute RMF/ICD 503 docs (SSP, CONOPS, Contingency Plans, User Guides, SOPs).
• Update control volatility assessments based on threats and policies.
• Support ISCM activities with technical content reviews.

Skills

Security engineering

RMF ICD-503

A&A leadership

Technical writing

Leadership

Mentoring

Education

Technical Degree or Cert

Job description

General Dynamics Information Technology, Inc. seeks a senior Lead Information Systems Security Engineer (ISSE) to guide RMF/ICD 503 security lifecycle across complex programs.

You’ll coordinate with ISSMs, PMs, and engineering teams to ensure accreditation readiness and secure architectures. You will own A&A activities, provide executive-level security briefings, and mentor engineers while delivering robust SSPs, CONOPS, and audit artifacts for demanding DoD environments.