Cybersecurity Engineer III

Apex Systems; San Diego (CA); On-site; USD 92,000 - 99,000; Full time

Job summary

Everforth Apex is seeking a Cybersecurity Engineer III to support DoD RMF/A&A activities for NIWC Pacific. The role focuses on accreditation, security control implementation, and continuous monitoring on 100% onsite in San Diego, CA.

DoD experience and active clearance are required. The candidate will maintain SSPs/SAPs/SARs, perform vulnerability assessments, and coordinate with system owners and government stakeholders to ensure compliance.

Qualifications

• Active DoD security clearance required.
• Experience with RMF lifecycle and A&A.
• Experience supporting NIWC/NavWar/Navy/DoD cybersecurity programs preferred.

Responsibilities

• Support RMF A&A efforts per the DoD RMF.
• Maintain accreditation docs: SSPs, SAPs, SARs, POA&Ms.
• Perform security control implementation, testing, and validation.
• Conduct vulnerability assessments, security audits, and risk analyses.
• Manage and update eMASS packages through the lifecycle.
• Support continuous monitoring activities and security reviews.
• Assist with ATO/ATC/IATT and related processes.
• Maintain DISA circuit connection documentation.

Skills

RMF

eMASS

ISSO

ISSE

DoD cybersecurity

Education

IAT III Certification (CASP+/CISSP/CISA/CCNP Security/GCED/GCIH)

Tools

SSP

SAP

SAR

POA&M

Job description

# Cybersecurity Engineer IIIApply**Job#: 3056653****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.*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 [e-mail]****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, or GCIH)**Pay Rate:** $67-$72/hrKey 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.**Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at https://www.apexsystems.com/privacy-policy**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.**Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.**If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [e-mail] or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.**UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.***Employee Type:** Contract**Location:** San Diego, CA, US**Job Type:****Date Posted:** October 20, 2026**Pay Range:** $67 - $72 per hour