Senior Systems Engineer - Cybersecurity Software

Join General Dynamics Mission Systems, Inc in Manassas, VA to help deliver cybersecurity software for mission-critical U.S. Navy computer systems. In this primarily on-site role, you will serve as a senior systems engineer and cybersecurity subject matter expert, working alongside customers and engineering teams to translate mission needs into detailed, verifiable requirements that reduce cyber risk. The position offers a strong benefits package, flexible scheduling with a 9/80 option (including every other Friday off), and support for your health and well-being.

Location: Manassas, VA (onsite)
Estimated Salary: USD 164,892 - 182,928 per year (actual pay may vary)

What you’ll do

• Act as the cybersecurity subject matter expert for assigned software capabilities, providing technical guidance to customers and engineering teams.
• Partner with customers to understand mission requirements, operational environments, cybersecurity threats, and product priorities.
• Develop clear, detailed, and verifiable low-level software requirements that turn customer needs into implementable capabilities.
• Review system architectures, interfaces, data flows, attack vectors, and vulnerabilities to inform requirements and design decisions.
• Recommend software capabilities and technical mitigations to prevent, detect, or reduce cybersecurity risks.
• Collaborate with software engineers to evaluate technical approaches and design tradeoffs.
• Work with test engineers to define verification criteria, resolve requirement questions, and confirm delivered capabilities meet customer needs.
• Maintain requirements traceability throughout development, integration, testing, and delivery.
• Monitor relevant cybersecurity news, emerging exploits, adversary techniques, and defensive technologies, assessing product implications.
• Develop and review systems engineering, cybersecurity, and accreditation documentation as needed.
• Communicate technical findings, risks, recommendations, and progress to customers, program stakeholders, and engineering teams.
• Mentor less-experienced engineers in your area of expertise.

Minimum qualifications

• Bachelor’s degree in Systems Engineering, or a related Science, Engineering or Mathematics field, plus at least 8 years of relevant experience; or a Master’s degree plus at least 6 years of relevant experience.

Cybersecurity and engineering experience that helps

• Strong systems engineering experience with software, including creating and managing detailed, verifiable software requirements.
• Customer-facing experience translating operational needs into technical requirements and deliverable capabilities.
• Cybersecurity expertise focused on how attacks work, including attack vectors, vulnerabilities, adversary techniques, and practical mitigations.
• Knowledge of cybersecurity capabilities such as access control, auditing, network security, intrusion prevention, encryption, or vulnerability detection.
• Experience with ICD 503, NIST SP 800-53, the DoD JSIG, the DoD 8500 series, or comparable DoD cybersecurity guidance.
• Experience with threat analysis, risk assessment, requirements traceability, or accreditation support.
• Strong technical writing and communication skills for technical and nontechnical audiences.
• Experience working in an Agile environment and proficiency with Microsoft Office products.

Clearance and citizenship

• Department of Defense Secret security clearance is obtainable within a reasonable amount of time after hire.
• Selected applicants will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information.
• U.S. citizenship is required due to the nature of work performed within company facilities.

Benefits and flexibility

• 401(k) matching
• Flexible time off
• Paid parental leave
• Healthcare benefits
• Health and wellness programs
• Employee resource groups
• Social groups
• Flexible schedules, including the option for every other Friday off through a 9/80 schedule
• Competitive benefits

Workplace options: Primarily on-site with opportunities for hybrid and flexible work options available.

Hiring note: This job posting will remain open until the position is filled.