> Markdown version of [/jobs/ext/4424324-sr-principal-engineer-systems](https://www.wearedevelopers.com/jobs/ext/4424324-sr-principal-engineer-systems). 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 Engineer Systems

- **Company:** Northrop Grumman
- **Location:** El Segundo, CA, United States
- **Experience:** Expert
- **Salary:** $142,200.0 - $213,400.0
- **Contract:** Permanent contract
- **Skills:** Agile Methodology, Systems Engineering, Continuous Integration, Network Interface Controllers, Requirements Management, SAP (Applications), Systems Architecture, System Testing, SC Clearance
- **Published:** October 2, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9213486/sr-principal-engineer-systems

## About the Role

* Must have a Bachelors of Science degree in a STEM field and at least 8 years of relevant military / professional experience, OR a Master's Degree in a STEM field and at least 6 years of relevant military / professional experience, OR a PhD and at least 4 years of relevant military / professional experience
 * Must have experience across the systems engineering lifecycle, including: Requirements development and decomposition, Requirements management and traceability, Verification & validation planning and execution
 * Must have experience with requirements management tools (e.g., DOORS, DOORS Next, or similar).
 * Must have experience with ICD development and interface definition.
 * Must have experience preparing and delivering technical presentations to customers or leadership.
 * Must have an active U.S. Government Secret clearance (investigation within the last 6 years or enrolled in Continuous Evaluation).
 * Must have the ability to obtain and maintain Top Secret clearance and Special Access Program (SAP) clearance within a reasonable amount of time as determined by business needs.
 * Must have the ability to obtain and maintain subsequent SAP PARs following commencement of employment to be able to completely support statement of work

Preferred Qualifications

 * Active USG Top Secret and/or current Special Access/SCI, as required by program.
 * Experience supporting major systems engineering milestones (e.g., SRR, PDR, CDR).
 * Experience with system architecture development, model-based systems engineering (MBSE), and/or CONOPS definition.
 * Hands-on experience with HW/SW integration and test, including test procedure development and discrepancy/anomaly resolution.
 * Familiarity with Agile development methods and/or CI/CD environments.
 * Experience coordinating with suppliers on technical requirements, interfaces, and verification expectations.

## Description

* Apply the full systems engineering lifecycle, including Concept development and system definition, Requirements development, decomposition, and allocation, Interface definition and management, Integration, verification, and validation planning and execution
 * Develop Verification & Validation (V&V) strategies and plans, including Requirement Verification Plans and System Test & Verification Plans.
 * Work closely with test and specialty engineering teams to ensure test procedures correctly interpret and verify requirements.
 * Develop and maintain Interface Control Documents (ICDs) for internal and external system interfaces through internal coordination with Integrated Product Teams (IPTs), suppliers, and customers, and through interface working groups.
 * Support development and documentation of system architectures and Concepts of Operations (CONOPS) working with cross-functional teams to ensure the architecture supports performance, reliability, safety, and maintainability objectives.
 * Provide systems engineering input to design reviews (SRR, PDR, CDR) and integration/test readiness reviews.
 * Prepare and deliver technical briefings to internal leadership and external customers.