Principal / Senior Principal Engineer – Modeling, Simulation & Analysis

About the Role

The Engineering & Sciences organization at Northrop Grumman Mission Systems is seeking a Principal or Senior Principal Modeling, Simulation & Analysis (MS&A) Engineer in Woodland Hills, CA. The ideal candidate has a strong background in physics-based modeling, simulation, and data analysis, with experience supporting inertial navigation products through design, verification, and performance characterization.

What You'll Do

• Develop and maintain physics-based models and simulations of inertial navigation systems (INS), including sensors, error sources, and environmental effects
• Perform Monte Carlo analyses, sensitivity studies, and trade-off analyses to assess system performance and margins
• Analyze lab, flight, and field test data to validate models and quantify performance
• Support requirements decomposition with model-based performance predictions and error budgets
• Generate and maintain simulation frameworks/toolchains (MATLAB/Simulink, Python, C/C++) reusable across programs
• Collaborate with systems, hardware, and software teams to integrate models into HIL/SIL environments
• Contribute to test planning by defining model-informed test cases and stress scenarios
• Analyze test/qualification results, perform root cause investigations, and recommend design updates
• Prepare technical documentation, validation reports, and executive-level presentations
• Mentor junior engineers in modeling, simulation, and data analysis methods
• Drive continuous improvement in MS&A processes, tools, and standards

Requirements

Principal level: Bachelor's in STEM + 5 years, Master's + 3 years, or PhD + 1 year.

Senior Principal level: Bachelor's in STEM + 8 years, Master's + 6 years, or PhD + 4 years.

Both levels:

• Demonstrated experience in modeling, simulation, and analysis for complex systems
• Proficiency with MATLAB/Simulink and Python or comparable tools
• Experience processing and analyzing sensor or navigation data sets (IMU logs, flight test data, lab data)
• Strong analytical and problem-solving skills; excellent written/verbal communication
• U.S. Citizenship; current/active U.S. Government Secret clearance; full-time onsite in Woodland Hills, CA

Preferred Qualifications

• Master's or PhD in Aerospace Engineering, Electrical Engineering, Physics, Applied Mathematics, or related field
• Experience with INS, IMU modeling, navigation algorithms, or related estimation/control systems
• Experience with GNC, Kalman filtering, state estimation, or sensor fusion algorithms
• Experience with HIL/SIL integration and validation
• Experience with C/C++ or Python for algorithm development
• Track record supporting program milestones (SRR, SFR, PDR, CDR)

Schedule

Full-time, onsite in Woodland Hills, CA. Travel: 10% of the time.

Pay & Benefits

Primary Level Salary Range: $114,000.00 - $171,000.00 (Secondary Level Salary Range: $142,200.00 - $213,400.00 for higher-graded fills). Employees may also be eligible for overtime, shift differential, and a discretionary bonus. Benefits include health insurance, life and disability insurance, a savings plan, company-paid holidays, and paid time off (PTO).