Information System Security Officer - Senior
Job Description
Everforth ECS Federal is seeking a Senior Information System Security Officer to support a mission-focused federal IT program in Washington DC.
Please Note: This position is contingent upon contract award.
Join Everforth ECS Federal to protect mission-critical federal systems through strong RMF, assessment and authorization, and continuous monitoring practices. You will support national security and law enforcement programs in a collaborative cybersecurity environment focused on security discipline, compliance readiness, risk reduction, and mission assurance.
The Senior Information System Security Officer will manage system security compliance, assessment and authorization documentation, continuous monitoring activities, POA&Ms, security control evidence, and federal cybersecurity reporting requirements.This role supports RMF execution, audit readiness, vulnerability management coordination, and compliance activities for federal mission systems operating in secure environments.
The Senior Information System Security Officer will maintain System Security Plans, Security Assessment Reports, Risk Assessment Reports, POA&Ms, control evidence, vulnerability reporting, audit support materials, and compliance documentation.This position will coordinate remediation activities, support continuous monitoring updates, track security findings, work with technical teams to gather evidence, and help ensure systems remain aligned with federal security requirements and mission needs.
This role requires a senior cybersecurity professional with experience supporting RMF, assessment and authorization, continuous monitoring, security documentation, vulnerability tracking, and compliance reporting in federal environments. The ideal candidate will bring strong attention to detail, documentation discipline, risk awareness, customer communication skills, and the ability to collaborate with cybersecurity, engineering, operations, program leadership, and government stakeholder teams in a classified or sensitive federal mission environment.
Required Skills- Minimum 7 years cybersecurity compliance, ISSO, or RMF experience
- Experience with NIST RMF, FISMA, security documentation, POA&Ms, and continuous monitoring.
Desired Skills
CISSP, CAP, CISM, Security+; CSAM, JCAM, eMASS, Xacta, NIST/FISMA/CNSS, classified systems, or audit readiness experience.
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.
We value:
- Attracting and developing top talent and high-performing teams
- Fostering a culture that is engaging, accountable, and mission-driven