Cybersecurity Engineer III

Job#: 3047415

Job Description:

Apex Systems is seeking a highly experienced Cybersecurity Engineer III to support a critical Department of Defense program supporting the Naval Information Warfare Center Pacific (NIWC PAC). This role is focused on Assessment & Authorization (A&A) activities, cybersecurity compliance, and Risk Management Framework (RMF) accreditation efforts for mission-critical systems.

The ideal candidate will have extensive experience supporting DoD cybersecurity programs, maintaining system accreditations, performing security assessments, and managing the full RMF lifecycle utilizing eMASS. This position is best suited for cybersecurity professionals with strong A&A, ISSO, ISSE, RMF, or compliance backgrounds.

If interested, please reach out to Rich at

Location: San Diego, CA (100% Onsite)

Duration: 6-Month Contract-to-Hire

Clearance Required: Active Secret Clearance

Certification Required: IAT III Certification (CASP+, CISSP, CISA, CCNP Security, GCED, IH)

Pay Rate: $67-$72/hr

Key Responsibilities

• Support Assessment & Authorization (A&A) efforts in accordance with the DoD Risk Management Framework (RMF).
• Develop, maintain, and update accreditation documentation including:
  • System Security Plans (SSPs)
  • Security Assessment Plans (SAPs)
  • Security Assessment Reports (SARs)
  • Plans of Actions & Milestones (POA&Ms)
• Perform security control implementation, testing, validation, and compliance reviews.
• Conduct vulnerability assessments, security audits, and risk analyses.
• Manage and update eMASS packages throughout the accreditation lifecycle.
• Support continuous monitoring activities including:
  • Quarterly IV&V reviews
  • STIG compliance assessments
  • Annual Security Reviews (ASRs)
  • Monthly POA&M updates
• Assist with ATO, ATC, IATT, and related authorization processes.
• Maintain DISA circuit connection documentation and inherited security controls.
• Perform incident triage and cybersecurity monitoring activities.
• Identify vulnerabilities and recommend remediation strategies.
• Collaborate with system owners, engineers, security teams, and government stakeholders to ensure compliance with cybersecurity requirements.

Preferred Qualifications

• CISSP Certification.
• Previous experience supporting NIWC, NAVWAR, Navy, DoD, or Federal cybersecurity programs.
• ISSO, ISSE, RMF Analyst, A&A Analyst, or Security Compliance background.
• Experience supporting classified systems and accreditation efforts.
• Strong understanding of cybersecurity monitoring and incident response processes.

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 ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.

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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 SupportLinc 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 prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Everforth Apex team member can provide.

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