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# Principal/Sr Principal Model-Based Systems Engineer (MBSE)

- **Company:** Northrop Grumman
- **Location:** San Antonio, TX, United States
- **Experience:** Expert
- **Salary:** $113,900.0 - $170,900.0
- **Contract:** Permanent contract
- **Skills:** Agile Methodology, Software System Penetration Testing, Systems Engineering, JIRA, Cyber Security, Computer Engineering, Data Transmissions, Networking Hardware, Information Systems Security Architecture Professional, Information Systems Security Engineering Professional, Systems Development Life Cycle, SAP (Applications), Software Requirements Analysis, Systems Modeling Language, Systems Architecture, Computer Network Technologies, SC Clearance, Information Technology, Devsecops
- **Published:** September 19, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9092400/principalsr-principal-model-based-systems-engineer-mbse

## About the Role

Basic Qualifications for a Principal Cyber Systems Engineer

 * Bachelor's degree with 5 years, Master's degree with 3 years, or a PhD with 1 year of experience in: Systems Engineering, Cybersecurity Engineering, Computer Engineering, Computer Science, or 9 years' experience in a cyber systems engineering related fields in lieu of a degree.
 * U.S. Citizenship is required.
 * A current active Secret clearance is required to be considered
 * The ability to obtain and maintain a Top-Secret clearance.
 * Able to obtain, within six months of hire, an IASAE II certification (CISSP preferred) in accordance with DoDI 8570/8140
 * Comprehension of systems engineering principles, theories and concepts.
 * Experience applying Model Based Systems Engineering to develop and model requirements
 * Experience managing requirements or systems engineering artifacts using tools such as DOORS, Cameo, or JIRA.
 * Direct experience in one or more of the following Systems Engineering activities: system requirements decomposition/derivation/flow down/traceability, architecture, high-level/detail design, implementation, integration and test, and/or verification & validation.

Basic Qualifications for a Sr. Principal Cyber Systems Engineer

 * * Bachelor's degree with 8 years, Master's degree with 6 years, or a PhD with 4 years of experience in: Systems Engineering, Cybersecurity Engineering, Computer Engineering, Computer Science, or 14 years' experience in a cyber systems engineering related fields in lieu of a degree.
 * U.S. Citizenship is required.
 * A current active Secret clearance is required to be considered
 * The ability to obtain and maintain a Top-Secret clearance.
 * Able to obtain, within six months of hire, an IASAE II certification (CISSP preferred) in accordance with DoDI 8570/8140
 * Comprehension of systems engineering principles, theories and concepts.
 * Experience applying Model Based Systems Engineering to develop and model requirements
 * Experience managing requirements or systems engineering artifacts using tools such as DOORS, Cameo, or JIRA.
 * Direct experience in one or more of the following Systems Engineering activities: system requirements decomposition/derivation/flow down/traceability, architecture, high-level/detail design, implementation, integration and test, and/or verification & validation., * Demonstrated experience developing system architectures for complex aerospace vehicles or subsystems using MBSE (SysML)
 * OMG SysML Model User Certification
 * IASAE level III certified (ISSEP, ISSAP) in accordance with DoDI 8570/8140
 * Top Secret/SCI Security Clearance with additional preference for SAP briefing on the Sentinel program.
 * Direct experience supporting the development of RMF assessment authorization artifacts development to satisfy NIST SP 800-37 requirements.
 * Knowledge of Cyber Security systems engineering practices, network technologies, DoD system development life cycles and methodologies, and insight into information technology infrastructure management/monitoring and applications
 * Experience innovating in Cybersecurity Accreditation processes and procedures in a multi-certification (Cyber, Nuclear Surety, etc.) context as part of a Digital Engineering Environment
 * Experience in a Systems Engineering role with responsibilities in the planning, designing, implementation, testing, and delivery of a system with Cyber/Information Assurance requirements
 * Experience managing and directing efforts following an Agile and DevSecOps process model
 * Ability to calmly negotiate challenging program requirements, strategies, and conflicting constraints among a large and diverse group of program stakeholders.

## Description

* Work within the Systems Engineering Group to provide technical decisions and guidance to enable timely, high quality product deliveries and flight test events that meet mission Cyber requirements
 * Partner and collaborate with other program systems engineers across Integrated Product Teams to accomplish program cyber requirements and meet mission objectives
 * As a member of a team of specialized NGMS cyber systems engineers, support the development and enhancement of Launch and Missile Defense systems
 * Participate as part of an extended team of US government, Northrop Grumman Mission Systems, Northrop Grumman Defense Systems, and suppliers of cybersecurity practitioners across multiple program locations
 * Ensure weapon system compliance with all contractually obligated cybersecurity standards and guidance, including but not limited to CNSSI 1253, DoD 8570, DoD 8510, and AFI 17-101
 * Propose and design cyber systems architecture changes with traceability to requirements
 * Provide cyber implementation guidance and oversight across technical teams
 * Develop and document technical standard engineering processes and procedures as needed
 * Participate in engineering reviews of technical requirements, design and implementation plans prior to development of computer systems, digital communications systems, networking devices, computer architectures
 * Perform cyber-attack surface analysis of system designs with recommendations to mitigate and reduce risk
 * Participate in cybersecurity assessment activities and review cybersecurity assessment methods, plans, procedures, reports and security penetration test planning and execution.
 * Provide input to program milestones and metrics, adhering to cybersecurity-relevant plans and schedules
 * Identify problems and research technical solutions to resolve these problems
 * Apply analytical and evaluative methods and techniques to issues or studies concerning the efficiency and effectiveness of Cyber Security implementation
 * Solve complex problems across disciplines in an Agile, DevSecOps environment
 * Support program engineering review boards


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