Cybersecurity Engineer - RMF (Active Secret Clearance)

Cybersecurity Engineer - RMF (Active Secret Clearance)

Cybersecurity Engineer - RMF (Active Secret Clearance) ID: 2026-72468 US-VA-Manassas Required Clearance: Secret Category: Engineering-Other Employment Type: Full Time Hiring Company: General Dynamics Mission Systems, Inc.

Basic Qualifications

Bachelor's degree in Engineering, or a related Science or Mathematics field, plus a minimum of 5 years of relevant experience; or Master's degree plus a minimum of 3 years of relevant experience.

CLEARANCE REQUIREMENTS: Department of Defense active Secret security clearance is required. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Candidate must be local to the office and able to work onsite.

Role and Position Objectives

As a Cybersecurity Systems Engineer, you will own the end-to-end RMF lifecycle for Navy information systems from categorization through authorization and continuous monitoring. You will be the primary technical authority for building, maintaining, and defending ATO packages across multiple systems simultaneously. The ideal candidate combines deep RMF expertise with systems engineering fundamentals, translates security requirements into actionable guidance, and thrives managing competing priorities in an Agile environment.

Primary Responsibilities

• Shepherd multiple Navy information systems through the full ATO lifecycle (Categorize, Select, Implement, Assess, Authorize, Monitor)
• Build and maintain complete authorization packages: SSPs, SAPs, SARs, RARs, POA&Ms, architectural diagrams, HW/SW inventories, and continuous monitoring strategies
• Develop, review, and maintain authorization boundary diagrams that clearly delineate system scope, data flows, interconnections, and external interfaces
• Assess and validate NIST SP 800-53 security controls; write control satisfaction narratives with rigor to withstand SCA/AO scrutiny
• Implement and validate STIGs across diverse system components; track findings through resolution or risk acceptance
• Conduct vulnerability scans (ACAS/Nessus, SCAP), interpret results, and translate findings into remediation plans and residual risk determinations
• Manage POA&M items end-to-end creation, milestone tracking, risk characterization, and closure with evidence
• Coordinate with system owners, ISSMs/ISSOs, SCAs, and AOs to adjudicate risk and achieve authorization decisions on schedule
• Support continuous monitoring including periodic control assessments, ongoing authorization evidence collection, and change-impact analysis
• Integrate security assessment activities into DevSecOps CI/CD pipelines where applicable

Knowledge, Skills and Abilities

• RMF Mastery: Hands-on experience executing the full RMF lifecycle (NIST SP 800-37) from categorization (FIPS 199/CNSSI 1253) through ATO and continuous monitoring not just familiarity, but package ownership
• Control Assessment: Deep knowledge of NIST SP 800-53 Rev 4/Rev 5; ability to assess implementations, write defensible narratives, and identify gaps
• STIG Implementation: Practical experience applying and verifying STIGs across OSes, network devices, databases, and applications using STIG Viewer and SCAP tools
• Vulnerability Management: Proficiency with ACAS/Nessus and SCAP Compliance Checker; ability to interpret results and drive remediation
• Documentation: Proven ability to produce audit-ready RMF artifacts (SSPs, SARs, SAPs, RARs, POA&Ms) that satisfy AO requirements
• Stakeholder Communication: Can translate technical findings into risk-informed language for system owners, PMs, and AOs
• Multi-System Management: Organizational skills to track controls, findings, and milestones across concurrent authorization efforts
• Systems Engineering Foundation: Understanding of system architectures, data flows, boundaries, and how security requirements map to implementations

What Sets You Apart

• Experience with Navy RMF implementation, including Navy-specific overlays, NAVSEA processes, and authorization workflows
• Proficiency with eMASS and VRAM
• Experience with DoD cloud authorization (IL4IL6), FedRAMP reciprocity, or container security (Kubernetes/OpenShift)
• Relevant certifications: Security+, CISSP, CAP, CISM, and/or AWS security certs (IAM/IAT Level II/III per DoD 8140)
• Experience with DevSecOps toolchains and security gates in CI/CD pipelines
• Experience supporting SCA evaluations or serving as an ISSE/ISSM
• Track record of achieving ATO decisions on schedule across multiple systems
• Works independently under limited direction across concurrent efforts
• Active Secret clearance

Salary Note This estimate represents the typical salary range for this position based on experience and other factors (geographic location, etc.). Actual pay may vary. This job posting will remain open until the position is filled. Combined Salary Range USD $112,924.00 - USD $125,275.00 /Yr.

Company Overview

General Dynamics Mission Systems (GDMS) engineers a diverse portfolio of high technology solutions, products and services that enable customers to successfully execute missions across all domains of operation. With a global team of 12,000+ top professionals, we partner with the best in industry to expand the bounds of innovation in the defense and scientific arenas. Given the nature of our work and who we are, we value trust, honesty, alignment and transparency. We offer highly competitive benefits and pride ourselves in being a great place to work with a shared sense of purpose. You will also enjoy a flexible work environment where contributions are recognized and rewarded. If who we are and what we do resonates with you, we invite you to join our high-performance team!

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans