Job Description

Job Title: Principal Mechanical Design Engineer

Location: Woodland Hills, CA

Telecommute: No (100% On-site)

Clearance Type: Active DoD Secret (or higher)

Work Shift: 1st Shift (9/80A)

Travel: Yes, less than 10%

Bill Rate Max: $60/HR
12 Months Contract

About the Role:

Northrop Grumman Mission Systems is seeking a Principal Mechanical Design Engineer to join our Engineering & Sciences (E&S) team in Woodland Hills, CA . In this role, you'll support the development and sustainment of advanced military avionics including inertial navigation systems and mission computers for the Sentinel program .

You'll be part of a team that is redefining the future of engineering through model-based design, agile development practices, and cutting-edge innovation. This is a hands-on, on-site role for a self-driven engineer who thrives in a collaborative and fast-paced environment.

Key Responsibilities:

• Lead and contribute to mechanical design efforts for avionics hardware and systems.
• Design high-reliability, cost-effective mechanical components with a focus on manufacturability and production scalability.
• Perform tolerance analyses, GD&T application, drawing creation, and documentation using Siemens NX and Teamcenter.
• Support production and resolve critical issues, including root cause analysis and rapid manufacturing line support.
• Collaborate closely with cross-functional teams: program management, operations, quality assurance, and supply chain.
• Mentor junior engineers and promote knowledge sharing across teams.

Basic Qualifications:

• Bachelor's degree in STEM with 5+ years of relevant experience OR

Master's degree in STEM with 3+ years of experience OR
Ph.D. in STEM with 1+ year of experience.

• Proficiency with mechanical CAD software (preferably Siemens NX ).
• Working knowledge of Geometric Dimensioning and Tolerancing (GD&T) .
• Strong presentation, verbal, and written communication skills.
• Prior experience mentoring or guiding junior engineers.
• Active DoD Secret clearance or higher required.

Preferred Qualifications:

• Advanced proficiency in Siemens NX and Teamcenter PLM .
• Expert knowledge of GD&T per ASME Y14.5 and familiarity with ASME/MIL standards .
• Understanding of mechanical stress principles and basic structural analysis.
• Demonstrated innovation in solving complex design problems.
• Strong analytical mindset with a focus on continuous process improvement.
• Ability to thrive in high-pressure, fast-turnaround environments.
• Effective collaboration across technical and non-technical teams.

Job Type: Contract

Pay: Up to $60.00 per hour

Expected hours: 40 per week

Schedule:

• 8 hour shift

Education:

• Bachelor's (Required)

Experience:

• mechanical CAD software (preferably Siemens NX): 5 years (Preferred)
• Geometric Dimensioning and Tolerancing: 5 years (Preferred)

Security clearance:

• Secret (Required)

Ability to Commute:

• Woodland Hills, CA 91303 (Required)

Work Location: In person

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