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Seneca Resources Company, LLC

ITMC-CE3-02 - Cybersecurity Engineer III

On site

San diego, United states

Senior

Freelance

17-03-2026

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Skills

Leadership Incident Response Risk Management SAP Monitoring Test Architecture

Job Specifications

 

Position Title: Cybersecurity Engineer III (RMF & A&A Expert)

Location: San Diego, CA (100% Onsite) Clearance Requirements: Active Secret Clearance Position Status: Full Time Pay Rate: $140k-$150k

Position Description:

Are you a seasoned Cybersecurity professional with a deep mastery of the Risk Management Framework (RMF)? Seneca Resources is seeking a Cybersecurity Engineer III to lead critical Assessment and Authorization (A&A) efforts in support of Naval Information Warfare Center (NIWC) Pacific.

In this high-visibility role, you will be the primary driver of cybersecurity monitoring operations and accreditation lifecycles. You will not just identify vulnerabilities; you will architect remediation strategies and navigate complex eMASS workflows to ensure our mission-critical systems maintain their Authorization to Operate (ATO). This is an opportunity to apply technical rigor to national security initiatives in a collaborative, mission-focused environment.

Key Responsibilities:

A&A Leadership: Lead the development of comprehensive RMF documentation, including System Security Plans (SSP), Security Assessment Plans (SAP), and Security Assessment Reports (SAR).

Security Control Architecture: Test and apply security controls based on system categorization, incorporating privacy/classified overlays and tailoring controls (AI, NOFORN, etc.) to specific mission needs.

Vulnerability Management: Conduct active and passive reconnaissance; author and manage Plans of Action and Milestones (POA&Ms) with verifiable mitigation statements and accurate milestone tracking.

Accreditation Lifecycle Management: Execute eMASS scheduled tasks, including Quarterly IV&V, STIG checks, Annual Security Reviews (ASR), and resubmissions for ATO, ATC, IATC, and IATT.

Circuit & Cloud Integration: Maintain DISA circuit connections (CCSDs) and manage inheritance from accredited systems and cloud service providers.

Incident Response: Maintain cybersecurity monitoring operations and perform high-level triage to assess the scope and impact of potential security incidents.

Required Skills/Education:

Experience: 10+ years of dedicated experience in Cybersecurity, Incident Response, or Information Assurance.

Technical Expertise: In-depth knowledge of NIST 800-53 security controls, eMASS, and the DISA STIG process.

Education: Bachelor’s degree in Cybersecurity, Computer Science, IT, or a related technical field (preferred).

Required Certification (IAT Level III): Must hold at least one of the following active certifications:

CISSP (or Associate) - Highly Preferred

CASP+

CCNP Security

CISA

GCED / GCIH

About Seneca Resources

At Seneca Resources, we are more than just a staffing and consulting firm; we are your trusted career partner. With offices across the U.S. and clients ranging from Fortune 500 companies to government organizations, we provide opportunities that help professionals grow their careers while making a lasting impact.

When you work with Seneca, you’re choosing a company that invests in your success. Our consultants enjoy competitive pay, comprehensive health, dental, and vision coverage, 401(k) retirement plans, and the support of a dedicated team who will advocate for you every step of the way.

Seneca Resources is proud to be an Equal Opportunity Employer, committed to fostering a diverse and inclusive workplace where all qualified individuals are encouraged to apply.

About the Company

Seneca Resources Company, LLC, the exploration and production segment of National Fuel Gas Company, headquartered in Houston, Texas, explores for, develops, and produces natural gas in the Appalachian Region including the Marcellus and Utica Shales. Our above-and-beyond environmental stewardship includes 100% responsibly sourced gas designations, innovative technology, state-of-the-art water management, and a robust biodiversity program. Know more