> Markdown version of [/jobs/ext/3958452-sr-principal-cyber-systems-engineer](https://www.wearedevelopers.com/jobs/ext/3958452-sr-principal-cyber-systems-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr Principal Cyber Systems Engineer - **Company:** Northrop Grumman - **Location:** San Diego, CA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Systems Engineering, CompTIA Security+, Cyber Security, Network Security, Information Technology - **Published:** October 27, 2026 - **Apply:** https://dejobs.org/x/x/47BA1161E82E485EADF3ED00F4CEBF62/job/ ## About the Role * Bachelor's degree in Engineering, Computer Science, or related STEM discipline and 5 years of relevant experience. * Experience in systems engineering and/or cybersecurity (requirements, architecture, integration, or test). * Familiarity with government/industry security frameworks (e.g., NIST, RMF, DoD STIGs). * Active DoD Secret clearance required to start, with the ability to obtain and maintain higher-level clearances if program needs evolve. * Strong written and verbal communication skills and ability to work effectively on cross-functional teams. Preferred Qualifications * Experience on airborne ISR, mission systems, or tactical communications programs. * Experience with Risk Management Framework (RMF) within DoW acquisition environment * Hands-on experience with secure network architectures, enclave design, cross-domain solutions, or platform/embedded systems security. * Professional cybersecurity certifications (e.g., Security+, CISSP, CEH) or relevant training. * On-site presence required to support classified work and lab/flight activities; some travel may be required for reviews, integration events, or customer meetings. ## Description Aeronautics Systems is seeking a Sr Principal System Security Engineer (SSE) to support the BQM-43 Targets program in Rancho Bernardo, CA. The selected candidate will apply systems engineering and cybersecurity disciplines across the program lifecycle, driving secure architectures, requirements, and implementations for the BQM-34 system. Roles & Responsibilities * Develop, decompose, and manage cyber and security requirements and ensure traceability through design, implementation, and test. * Define and maintain system and subsystem security architectures for AISR&T Programs, aligning with RMF, NIST, and DoD guidance. * Perform security risk assessments, threat modeling, and vulnerability analyses; recommend and track mitigation measures. * Produce and maintain security-related engineering artifacts (CONOPS, ICDs, security plans, interface specifications, test procedures). * Collaborate with software, hardware, network, and integration teams to embed security controls into designs and implementations. * Perform scans on program systems and develop associated findings reports and vulnerability analyses * Support security test planning and execution, review findings, and drive remediation activities. * Participate in technical reviews, trade studies, and customer/mission partner technical interchange meetings. * Prepare and deliver clear technical briefings and status to program leadership and customers.