About this opportunity
Everforth ECS lists this Information Systems Security Manager opportunity in merrifield, Virginia. Review the employer’s description below for duties, qualifications and application requirements.
Job description
Everforth ECS is seeking an Information Systems Security Manager to work in our Fairfax, VA office.
Everforth ECS is seeking an experienced Information System Security Manager (ISSM) to support U.S. Navy systems and programs. The ISSM will serve as the primary cybersecurity authority for assigned systems, ensuring compliance with Department of Defense (DoD) and Department of the Navy (DON) cybersecurity policies under the Risk Management Framework (RMF).
The ideal candidate will have deep experience supporting Navy Authorizing Officials (AOs), working within Navy/DoD environments such as NAVWAR, NAVAIR, NAVSEA, or Fleet Cyber Command, and maintaining system authorization packages in eMASS.
The ISSM will lead the preparations and interactions with the government for system security assessments and ensure the IS maintains its Authority to Operate (ATO). The ISSM will manage the implementation of security policies, conduct risk assessments, manage security controls, and Plan of Actions and Milestones (POAM).
The ISSM is expected to advise senior management on cybersecurity issues, communicate security risks, and collaborate with technical teams and other stakeholders. The successful candidate is able to multitask; assume ownership and accountability of risks, issues, and tasks; and successfully manage and resolve those risks, issues, and tasks to completion. The successful candidate is also able to work well in a team-oriented environment; self-manage his/her own tasks; and provide hands‑on guidance, direction, and mentoring to the technical team. Finally, the successful candidate is extremely well‑organized, well written, has a keen eye for detail, and can clearly articulate information (both orally and in writing) to customers, stakeholders, peers, and leadership within and external to the Program and organization.
Key Responsibilities:
Serve as the ISSM for Navy information systems in accordance with DoDI (RMF) and DoDI (Cybersecurity)
Oversee the full RMF lifecycle: categorization, control selection, implementation, assessment, authorization, and continuous monitoring
Develop, maintain, and manage RMF documentation including: System Security Plans (SSPs)
Security Assessment Reports (SARs)
Plan of Action & Milestones (POA&Ms)
Continuous Monitoring Strategies
Ensure compliance with: NIST SP 800-53 Rev. 5 security controls
NIST SP 800-37 Rev. 2 (RMF Guide)
DoD Cybersecurity Manual (DoDM )
SECNAV M-5239.1 (Department of the Navy Cybersecurity Manual)
Interface directly with Navy stakeholders including: Authorizing Officials (AOs)
Security Control Assessors (SCAs)
Information System Owners (ISOs)
Program Managers (PMs)
Manage system accreditation activities within eMASS and ensure data accuracy and completeness
Conduct and support security control assessments, vulnerability management, and mitigation tracking
Ensure compliance with STIGs (Security Technical Implementation Guides) and SRGs (Security Requirements Guides) from DISA
Support audits, inspections, and cybersecurity readiness reviews (e.g., FISMA, DON CIO inspections)
Provide cybersecurity guidance to engineering teams throughout system development lifecycle (SDLC), aligning with DevSecOps practices where applicable
Oversee incident response coordination in alignment with DoDI (Cyber Incident Response) and Navy procedures
Active Secret security clearance with willingness and ability to obtain TS/SCI
Bachelor’s degree in Cybersecurity, Information Technology, or related field (or equivalent experience)
8+ years of cybersecurity experience, with 3+ years as an ISSM or senior ISSO in a DoD/Navy environment
Strong experience implementing RMF under DoDI (latest version)
Hands‑on experience with eMASS
In-depth knowledge of: NIST SP 800-53 Rev. 5 controls
NIST SP 800-37 Rev. 2
DoDI /
SECNAV M-5239.1
Experience supporting Navy programs (e.g., NAVWAR, NAVAIR, NAVSEA, or USMC systems)
Familiarity with: DISA STIGs and SCAP compliance tools
ACAS (Assured Compliance Assessment Solution)
HBSS / Endpoint Security Solutions
Strong understanding of system architectures (on‑prem, cloud, hybrid)
Desired Skills
Active TS/SCI security clearance.
Experience with Navy Authorizing Officials (AOs) and Navy‑specific RMF processes
Familiarity with Platform IT (PIT) and Weapons Systems cybersecurity
Experience with DevSecOps pipelines and containerized environments
Knowledge of Zero Trust Architecture (DoD Zero Trust Strategy, 2022+)
Experience supporting systems in AWS GovCloud, Azure Government, or Navy cloud environments
Everforth ECS is the federal segment of Everforth , a $4B global organization with over 10,000 employees. Our nearly 3,500 professionals deliver advanced technology solutions in data and AI, cybersecurity, and enterprise transformation, serving defense, intelligence, and federal civilian agencies.
Our work powers mission‑critical outcomes, strengthens technology partnerships, and creates meaningful opportunities for our people. We are defined by a commitment to excellence in delivery, a culture of innovation, and an environment where talent can thrive and grow.
We value:
Attracting and developing top talent and high‑performing teams
Fostering a culture that is engaging, accountable, and mission‑driven
Meet the challenge. Make a difference with Everforth ECS!
ECS Federal LLC is an equal opportunity employer and does not discriminate or allow discrimination on the basis any characteristic protected by law. All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, or local jurisdiction law.
Everforth ECS is the federal segment of Everforth , a $4B global organization with over 10,000 employees. Our nearly 3,500 professionals deliver advanced technology solutions in data and AI, cybersecurity, and enterprise transformation, serving defense, intelligence, and federal civilian agencies.
Our work powers mission‑critical outcomes, strengthens technology partnerships, and creates meaningful opportunities for our people. We are defined by a commitment to excellence in delivery, a culture of innovation, and an environment where talent can thrive and grow.
Meet the challenge. Make a difference with Everforth ECS!
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Worksite address
merrifield, VA, 22118, US
Who can apply
Review the original listing for work authorization, qualifications and employer requirements.