Senior Systems Security Engineer

Cabre Fox subsidiary, Saxman One, LLC is seeking a highly skilled and motivated Senior Systems Engineer to join our team in support of a federal government client. This position requires advanced expertise in systems engineering, integration, and lifecycle management across complex enterprise IT environments. The ideal candidate will possess strong technical and analytical skills, with the ability to design, implement, and sustain secure, reliable, and scalable systems in alignment with mission requirements.

The successful candidate will play a key role in ensuring system interoperability, cybersecurity compliance, and operational effectiveness by developing technical solutions, managing configurations, and optimizing performance in accordance with Department of Defense (DoD) and Navy standards. This role requires proactive problem‑solving, collaboration with cross‑functional teams, and the ability to deliver results in a dynamic, fast‑paced environment. This position is contingent upon the award.

Incumbents are encouraged to apply!

The salary range (or hiring range) for this exempt position is: $150,000 - $185,000

The above salary range represents the company's good faith and reasonable estimate of the range of possible compensation at the time of posting. In addition, we offer a variety of benefits, including company holidays, paid time off, health insurance, dental insurance, vision insurance, life and disability insurance, tuition reimbursement, as well as a K with company match. This job will be posted until filled or withdrawn.

• Support the development, evaluation, and implementation of Authorization and Accreditation (A&A) cybersecurity policies, controls, and procedures in accordance with DoD and Navy RMF requirements
• Apply knowledge of system security engineering principles throughout the engineering lifecycle, including cryptography, access control, and risk management
• Develop and implement security measures for systems, networks, and data to protect against threats
• Conduct comprehensive security control assessments to ensure system compliance with applicable cybersecurity frameworks, DISA STIGs, and organizational policies
• Prepare, document, and maintain Risk Management Framework (RMF) packages and associated artifacts throughout all RMF steps to support system accreditation and continuous monitoring
• Coordinate and facilitate the approval‑to‑operate (ATO) process by preparing required documentation, addressing findings, and ensuring timely submission to Authorizing Officials (AOs)
• Implement and maintain system security postures, including technical safeguards, access controls, configuration management, and vulnerability mitigation strategies
• Provide subject matter expertise (SME) in Information Assurance (IA) and cybersecurity lifecycle management, supporting system owners, ISSMs, and other stakeholders throughout the RMF process
• Collaborate with cross‑functional technical teams and Government cybersecurity personnel to identify risks, develop mitigation plans, and ensure compliance across classified and unclassified systems
• Develop and maintain detailed security documentation, including CONOPS, SSPs, POA&Ms, PPS lists, and other required artifacts supporting system authorization and audits
• Participate in security reviews, technical working groups, and change control boards, providing technical recommendations and risk assessments for proposed system modifications