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Principal Mechanical Engineer​/Sr. Principal Mechanical Engineer

Job in Gilbert, Maricopa County, Arizona, 85233, USA
Listing for: Northrop Grumman
Full Time position
Listed on 2026-02-19
Job specializations:
  • Engineering
    Mechanical Engineer, Manufacturing Engineer, Engineering Design & Technologists, Aerospace / Aviation / Avionics
Salary/Wage Range or Industry Benchmark: 98400 USD Yearly USD 98400.00 YEAR
Job Description & How to Apply Below
Position: Principal Mechanical Engineer / Sr. Principal Mechanical Engineer

RELOCATION ASSISTANCE:
Relocation assistance may be available

CLEARANCE TYPE:
None TRAVEL:
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.

Northrop

Grumman Space Sector is seeking a Principal Mechanical Engineer / Sr. Principal Mechanical Engineer to support our Mechanical Systems & Design group based in Gilbert, Arizona.

In this role, the Principal/Sr. Principal Mechanical Engineer will support the design, development, and integration of spacecraft structures and mechanical hardware, taking projects from initial requirements through to integration and testing. The selected candidate will utilize advanced Computer-Aided Design (CAD) tools and related software to create detailed designs, develop documentation for manufacturing, and support assembly into flight-ready spacecraft.

This role requires strong collaboration and communication skills, as you will interact with internal stakeholders—including customers, program and functional management, and multidisciplinary engineering teams—as well as external component suppliers.

Job responsibilities include, but are not limited to, the following:
  • Perform detailed design and analysis utilizing CAD software.
  • Apply knowledge of Geometric Dimensioning and Tolerancing (GD&T), Design for Manufacturing principles, and spacecraft component layouts.
  • Leverage expertise in mechanics of metallic and composite materials, as well as stress calculations, to create optimal designs.
  • Support spacecraft integration and testing phases.
  • Collaborate across teams to ensure alignment with program goals and deliverables.

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

Basic Qualifications - Principal Mechanical Engineer:
  • Bachelor’s Degree in Mechanical Engineering or related STEM field with 5+ years of relevant engineering experience or a Master’s Degree in Mechanical Engineering or related STEM field with 3+ years of relevant engineering experience
  • Must be able and willing to obtain and maintain a DoD Top Secret/SCI clearance
Basic Qualifications - Sr. Principal Mechanical Engineer:
  • Bachelor’s Degree in Mechanical Engineering or related STEM field with 8+ years of relevant engineering experience or a Master’s Degree in Mechanical Engineering or related STEM field with 6+ years of relevant engineering experience
  • Must be able and willing to obtain and maintain a DoD Top Secret/SCI clearance
Preferred Qualifications:
  • Active DoD Top Secret clearance or SCI access with current SSBI
  • Experience with 3D CAD model-based software (specifically Creo Parametric)
  • Practice in making and reviewing engineering drawings with GD&T in 2D and 3D MBD’s
  • Experience with 3D Printing, Design for Manufacturing, and hardware fabrication
  • Experience in satellite and spacecraft structures design
  • Excellent communication and leadership skills

Primary Level Salary Range: $98,400.00 - $Secondary Level Salary Range: $ - $The 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…

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