JobsMechanical EngineerSan JoseSr. Principal Mechanical Engineer

Northrop Grumman

Posted 3 days ago

Sr. Principal Mechanical Engineer

Northrop Grumman · Sunnyvale, California, United States

Full-timeOn site5-10 yrs$129k–$194kListed as no visa sponsorship
APPLY ON NORTHROP GRUMMAN'S CAREERS SITE ↗
SAVE THIS JOB

We'll keep this job - the posting's full text, even after it closes. Free.

We'll email a six-digit code to make this your free Advancemint sign-in - and a link for later. Terms · Privacy Policy

Opens the employer's own application page.

In short

Plan aftermarket material requirements and develop manufacturing processes, operation sequences, bills of materials, work instructions, procedures, tooling, and cost estimates for marine propulsion and power-generation equipment. Support field-part repairs, manufacturing process improvements, capital equipment implementation, and engineering analysis that translates customer requirements into hardware specifications.

What they're looking for

MUST-HAVE SKILLS

Material Requirements PlanningManufacturing Process DevelopmentMechanical AssemblyEngineering Drawing InterpretationTechnical WritingTool DesignBill of Materials ManagementWork Instruction Development

ALSO MENTIONED

Marine PropulsionPower GenerationSteam TurbinesReduction GearsGeneratorsAuxiliary EquipmentAftermarket ProgramsMaterial Requirements PlanningManufacturing EngineeringIndustrial Engineering

Requires a bachelor's degree in a related STEM discipline and at least 8 years of relevant experience, or a master's degree in STEM and at least 6 years of experience. Candidates must be U.S. citizens, be able to obtain a Secret clearance, and have experience interpreting engineering drawings, mechanical assembly processes, technical writing, and presentations.

About the employer

Northrop Grumman Mission Systems, Inc.

hiring as Northrop Grumman

Northrop Grumman Mission Systems, Inc. is a company based out of 12011 Sunset Hills Rd, Reston, Virginia, United States.

HEADQUARTERS
Reston, Virginia
SIZE
2-10on LinkedIn
OFFICES
1 on LinkedIn

Is your LinkedIn profile ready for roles like this?

A free review of your profile, scored against what Engineering roles ask for, and what to fix first.

GET MY FREE REVIEWFREE · A SCORED REVIEW OF YOUR PROFILE, IN MINUTES

Questions about this role

Is this Northrop Grumman role remote?
Tagged on site.
What does it pay?
The posting lists $129,300–$193,900 a year.
Does it sponsor visas?
Listed as no visa sponsorship.
What experience does it ask for?
Listed as 5-10 years.

The posting, in full

RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE REQUIRED FOR START: No CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the Time 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.

▶ READ THE FULL POSTING

RELOCATION ASSISTANCE: No relocation assistance available

CLEARANCE REQUIRED FOR START: No

CLEARANCE TYPE: Secret

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 Mission Systems is looking for you to join our team as a Sr. Principal Mechanical Engineer based in Sunnyvale, CA.

The Project Engineer will support our aftermarket programs for the marine propulsion and power generation systems, working on various engineering and manufacturing processes for high-value gearing and steam turbine assemblies, machined components, and welded fabrications. These processes include precision manual assembly, welding, bonding, and heat treatment of iron-based products.

  • Perform Material Requirements Planning (MRP) for all aftermarket material.
  • Develop efficient process flows and sequences of operations, manage bills of materials, create detailed work instructions, process procedures, and tooling requirements.
  • Create Basis of Estimates (BOEs) for manufacturing of material, repair of field service parts, tooling design, and engineering support of manufacturing.
  • Create work instructions for the repair of parts and assemblies returning from the field operations.
  • Develop new processes, improve existing manufacturing processes, and develop the required tooling and fixtures with an excellent team of experienced assembly mechanics, machinists, welders, and engineers.
  • Perform functional analysis, timeline analysis, detail trade studies, and requirements allocation to translate customer requirements into hardware specifications.
  • Support continuous improvement initiatives and implementation of new capital equipment for establishing expanded production processes.

Basic Qualifications for the Sr. Principal Mechanical Engineer:

  • Bachelor's degree in a related STEM discipline (Science, Technology, Engineering, or Math) with a minimum of 8 years of relevant work experience; OR a master’s degree in a STEM discipline with 6 or more years of experience.
  • Experience reading and interpreting engineering drawings.
  • Experience with mechanical assembly processes.
  • Experience in technical writing and presentations.
  • Ability to obtain a US Government Secret Clearance.
  • U.S. citizenship is required.

Preferred Qualifications

  • Experience with Marine propulsion products (Turbines, Reduction Gears, Generators, Auxiliary equipment).
  • Manufacturing and/or Industrial Engineering experience.
  • Ability to operate in fast-paced and multi-tasking environments.
  • Experience with tool design.
  • Experience with SAP applications.

#MPR

Primary Level Salary Range: $129,300.00 - $193,900.00

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 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.

APPLY ON NORTHROP GRUMMAN'S CAREERS SITE ↗
SAVE THIS JOB

We'll keep this job - the posting's full text, even after it closes. Free.

We'll email a six-digit code to make this your free Advancemint sign-in - and a link for later. Terms · Privacy Policy

Similar roles open now

All 23 Mechanical Engineer roles in San Jose

This listing comes from Northrop Grumman's own careers site. Apply links go to the employer. Company facts are from Northrop Grumman Mission Systems, Inc.'s public profile. Last checked 5 Nov 2026.