Senior Information Systems Security Officer

Job#: 3052811

Job Description:

Candidates must be U.S. citizens able to obtain and/or maintain a Department of Defense security clearance as a condition and continuation of employment.

Location: Newington, Virginia (Onsite)

An opportunity is available for a Senior Information Systems Security Officer to support Risk Management Framework (RMF) activities. This role involves directing RMF initiatives, ensuring high‑quality authorization packages, and driving sustained compliance with cybersecurity requirements.

• Work with the team on portfolio-level RMF strategy and execution for multiple systems and enclaves.
• Utilize technical and soft skills to manage the development, review, and approval of authorization artifacts such as SSP, SAP/SAR, POA&M, Risk Register, and Continuous Monitoring Strategy.
• Craft risk statements and decision materials in a fast-paced environment.
• Implement quality gates, metrics, and dashboards for executive communication.
• Utilize results from vulnerability scans, security benchmarks, and configuration audits to resolve findings.

Clearance: Candidates must be able to obtain and/or maintain a TS/SCI security clearance as a condition and continuation of employment

Education: Bachelor’s degree in Cybersecurity, Information Systems, Computer Science, Engineering, or a related field.

Experience: 8+ years of related experience.

Technical

Skills:

• Expert‑level knowledge of RMF lifecycle and A&A documentation (SSP, SAP/SAR, POA&M, Continuous Monitoring Strategy, Risk Register).
• Mastery of RMF tooling for package management, control inheritance, workflow, and audit readiness.
• Hands‑on control assessment and validation against NIST SP 800-53; familiarity with related industry directives.
• Enterprise vulnerability management using tools like ACAS/Nessus and configuration baselines.
• Executive‑level writing and briefing skills.
• Security+ certification.

• CISM, CISSP, or CCSP certification.
• Experience with cloud A&A (AWS, Azure) at various levels.
• Experience establishing Continuous Monitoring programs and dashboards; familiarity with control overlays and tailoring.

The role involves working with a team on RMF strategy and artifact quality, coordinating assessments, guiding remediation, and mentoring analysts. The environment is highly team‑based with cross‑functional collaboration.

Everforth Apex is a world‑class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including Clearly Rateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.

Everforth Apex benefits overview:
Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a Support Linc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts.

In terms of professional development, Everforth Apex hosts an on‑demand training program, provides access to certification…