Skip to main contentA logo with &quat;the muse&quat; in dark blue text.

Principal Mechanical Design Engineer/Sr. Principal Mechanical Design Engineer

2 days ago San Dimas, CA

RELOCATION ASSISTANCE: No relocation assistance availableCLEARANCE REQUIRED FOR START: YesCLEARANCE TYPE: SecretTRAVEL: Yes, 10% of the Time Description At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work - and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they're making history.This position description does not represent a current opening but may be used to identify candidates with skills and experience for positions within Northrop Grumman that frequently become available. Candidates who express an interest may be considered for future positions at Northrop Grumman.Northrop Grumman Space Sector is seeking a Principal Mechanical Design Engineer / Sr. Principal Mechanical Design Engineer to support our Structures Design, Analysis and Integration (SDAI) department (within Western Region Engineering) in support of the Launch Vehicles Business Unit. This role can be based out of Redondo Beach or Azusa, California. *

Job responsibilities include, but are not limited to, the following:

Work within the Northrop Grumman Design group and will be responsible for creating drawing/design packages with proper content and ensuring compliance with applicable industry and military standards
Review designs for fit, function, manufacturability, economy of fabrication, and verifying completed work, checking dimensions, materials, and quantities to be used
Review of tolerance analysis, hardware selection, and fitment on assembly prints
Resolve drawing-interpretation issues as they arise
Verify 3D models submitted to manufacturing using Siemens NX 1946, managed with Teamcenter
Serve as a liaison among various engineering disciplines, including Manufacturing and Quality

Want more jobs like this?

Get Software Engineering jobs in San Dimas, CA delivered to your inbox every week.

Job alert subscription

Model fully defined components and assemblies efficiently in Siemens NX 1946 (Teamcenter), and produce/revise parametric drawings in conformance with ASME modeling and drawing standards
Utilize Microsoft Word, Excel, Windows, and NX 1946 as required
Communicate effectively, both verbally and in writing
Perform work quickly and accurately under schedule pressure while demonstrating patience
Exhibit strong time management and organizational skills

This requisition may be filled at either a Principal Mechanical Design Engineer level or a Sr. Principal Mechanical Design Engineer level based on the qualifications listed below.

Basic Qualifications - Principal Mechanical Design Engineer (Level 3):

Bachelor's degree in a STEM (Science, Technology, Engineering, and Mathematics) discipline with 5+ years of related engineering design experience; OR a Master's degree in STEM with 3+ years of related engineering design experience, OR a Ph.D. in STEM with 1+ years of related engineering design experience.
Must currently have an active DoD Secret security clearance at time of application
Demonstrated experience in geometric dimensioning and tolerancing
Working knowledge of standard manufacturing processes including CNC Mill and Lathe operations
Proficiency in Siemens NX 1946 and Teamcenter
Basic Qualifications - Sr. Principal Mechanical Design Engineer (Level 4):

Bachelor's degree in a STEM (Science, Technology, Engineering, and Mathematics) discipline with 8+ years of related engineering design experience; OR a Master's degree in STEM with 6+ years of related engineering design experience, OR a Ph.D. in STEM with 4+ years of related engineering design experience.
Must currently have an active DoD Secret security clearance at time of application
Demonstrated experience in geometric dimensioning and tolerancing
Working knowledge of standard manufacturing processes including CNC Mill and Lathe operations
Proficiency in Siemens NX 1946 and Teamcenter
Preferred Qualifications:

Experience with Product Manufacturing Information (PMI) CAD modeling in manufacturing environment
ASME Y14.5-2009
Experience working with DoD programs
Working knowledge of ASME Y14.100 and Mil-Standard 100
* Experienced with weld design per AWS D17.1 and D1.1
Primary Level Salary Range: $114,000.00 - $171,000.00The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate's experience, education, skills and current market conditions.Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions as well as allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. In addition, Northrop Grumman provides a variety of benefits including health insurance coverage, life and disability insurance, savings plan, Company paid holidays and paid time off (PTO) for vacation and/or personal business.The application period for the job is estimated to be 20 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates.Northrop Grumman is an Equal Opportunity Employer, making 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 our complete EEO and pay transparency statement, please visit http://www.northropgrumman.com/EEO. U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.

Client-provided location(s): San Dimas, CA
Job ID: NorthropGrumman-R10228461-2
Employment Type: OTHER
Posted: 2026-04-05T20:16:23

Perks and Benefits

  • Health and Wellness

    • Health Insurance
    • Dental Insurance
    • Vision Insurance
    • Life Insurance
    • Short-Term Disability
    • Long-Term Disability
    • HSA
    • HSA With Employer Contribution
    • On-Site Gym
    • Pet Insurance
    • Mental Health Benefits
    • Virtual Fitness Classes
  • Parental Benefits

    • Birth Parent or Maternity Leave
    • Non-Birth Parent or Paternity Leave
    • Fertility Benefits
    • Adoption Assistance Program
    • Family Support Resources
    • Adoption Leave
  • Work Flexibility

    • Flexible Work Hours
    • Remote Work Opportunities
    • Hybrid Work Opportunities
    • Four-Day Work Week
  • Office Life and Perks

    • Commuter Benefits Program
    • Company Outings
    • On-Site Cafeteria
    • Holiday Events
  • Vacation and Time Off

    • Paid Vacation
    • Paid Holidays
    • Sabbatical
    • Leave of Absence
  • Financial and Retirement

    • 401(K)
    • 401(K) With Company Matching
    • Performance Bonus
    • Relocation Assistance
    • Financial Counseling
    • Profit Sharing
  • Professional Development

    • Tuition Reimbursement
    • Promote From Within
    • Mentor Program
    • Shadowing Opportunities
    • Access to Online Courses
    • Lunch and Learns
    • Internship Program
    • Leadership Training Program
    • Associate or Rotational Training Program
  • Diversity and Inclusion

    Company Videos

    Hear directly from employees about what it is like to work at Northrop Grumman.