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# Cybersecurity Engineer III (48241)

- **Company:** ER Select LLC
- **Location:** San Diego, CA, United States
- **Experience:** Expert
- **Contract:** Temporary contract
- **Skills:** Cyber Security, Identity and Access Management, SARS Software Products, SC Clearance, Information Technology, Plan of Action and Milestones, Vulnerability Analysis
- **Published:** October 27, 2026
- **Apply:** https://www.thejobnetwork.com/job/9361eef7-6368-4c44-821d-da9dce04c7cd/cybersecurity-engineer-iii-

## About the Role

* 10+ years of cybersecurity or incident response experience, preferably within DoD or federal environments.
 * Active Secret clearance.
 * Strong hands-on experience with RMF and Assessment & Authorization (A&A).
 * Hands-on experience with eMASS and DoD accreditation processes.
 * Experience developing and maintaining:
 + System Security Plans (SSPs)
 + Security Assessment Plans (SAPs)
 + Security Assessment Reports (SARs)
 + Plans of Actions & Milestones (POA&Ms)
 * Strong experience with security controls, DISA STIGs, vulnerability assessment, testing, and remediation.
 * Experience supporting cybersecurity monitoring, security testing, auditing, and risk assessment.
 * Ability to work 100% onsite in San Diego, CA at the NIWC PAC location.

Required Certification

IAM Level II certification required. One of the following:

 * CISSP or CISSP Associate
 * CASP+
 * CAP
 * CGRC
 * CISM
 * GSLC

Preferred: CISSP

## Description

This position supports the NIWC PAC Information Technology Management Support Services contract. The Cybersecurity Engineer III will provide hands-on cybersecurity and accreditation support for a DoD environment, with a strong focus on RMF, A&A, eMASS, security controls, STIGs, POA&Ms, and ATO activities., * Support Assessment & Authorization (A&A) activities and the Risk Management Framework (RMF) accreditation lifecycle.

 * Develop, maintain, and update A&A documentation, including SSPs, SAPs, SARs, and POA&Ms.
 * Manage accreditation activities within eMASS, including scheduled tasking, ATO-related activities, quarterly IV&V, STIG checks, ASRs, and monthly POA&M updates.
 * Test and evaluate security controls based on security categorization, applicable overlays, and control tailoring.
 * Conduct security assessments, identify vulnerabilities, document findings, and recommend appropriate remediation.
 * Develop and maintain accurate POA&Ms, including mitigation statements, milestone tracking, and alignment with applicable security controls.
 * Perform and support DISA STIG assessments and remediation activities.
 * Support cybersecurity monitoring and incident response activities, including incident triage and impact assessment.
 * Support ATO, ATC, IATC, and IATT submissions and resubmissions, as applicable.
 * Maintain DISA circuit connections (CCSDs), system inheritance relationships, and accreditation workflow schedules.
 * Apply security requirements across classified, intelligence, privacy, and other applicable environments.