Sr. Principal Mechanical Design Engineer

Relocation Assistance

Relocation assistance may be available.

Northrop Grumman Aeronautics Systems seeks a Sr. Principal Mechanical Design Engineer (Level
4) to join the Engineering Design Center and Lab Operations within the Test and Evaluation organization. The role supports the design and development of custom testing solutions and specialized support equipment for the B‑2 Stealth Bomber and other platforms.

• Develop 3D CAD models, detail part, assembly, and integration drawings.
• Coordinate and liaison mechanical engineering designs through procurement and manufacturing processes.
• Coordinate and liaison electrical design integration and assembly.
• Lead and coordinate integration of hardware in a laboratory environment.
• Develop documentation to support designs and product lifecycle management.
• Support troubleshooting and system verification in a lab setting.
• Thrive in a fast‑paced work environment with high expectations, collaborative/team settings across all levels.

• Minimum of 8 years of related professional or military experience with a Bachelor’s degree in a STEM discipline, 6 years with a Master’s degree, or 4 years with a Ph.D. in a STEM discipline.
• Active DoD Secret or higher clearance with a background investigation completed within the last 6 years or currently enrolled in Continuous Evaluation.
• Ability to obtain and maintain Special Access Program (SAP) clearance.
• Experience developing mechanical designs using CATIA V5, Solid Works, NX, AutoCAD, or similar design software tools.

• Master’s or Ph.D. in Mechanical Engineering or a closely related field.
• Professional experience in aerospace and defense.
• Active Top Secret clearance.
• Active Program access clearance.
• Experience with PLM systems.
• Experience with additive manufacturing or 3D print design and technologies.
• Hardware integration experience in a laboratory environment.
• Demonstrated experience working in a dynamic environment with competing priorities.

Primary level salary range: $ – $. Compensation may also include overtime, shift differential, and discretionary bonuses. Senior positions may be eligible for long‑term incentives.

Benefits include health insurance coverage, life and disability insurance, a savings plan, company‑paid holidays, and paid time off for vacation and personal business.

Active DoD Secret clearance required. Ability to obtain Special Access Program clearance is essential.

Northrop Grumman is an Equal Opportunity Employer. The company makes decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For the complete EEO and pay transparency statement, please visit