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Principal/SR Principal CNC Programmer

Requisition ID: R10045727

  • Category IconCategory: Manufacturing and Production
  • Location IconLocation: Sunnyvale, CA, USA
  • Citizenship IconCitizenship Required: United States Citizenship
  • Clearance IconClearance Type: None
  • Telecommute IconTelecommute: No- Teleworking not available for this position
  • Shift IconShift: 1st Shift (United States of America)
  • Travel IconTravel Required: Yes, 10% of the Time
  • Positions IconPositions Available: 3

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 (NGMS) is looking for you to join our Marine Systems team as a highly motivated & skilled Principal or Senior Principal CNC Programmer based out of Sunnyvale, CA. Marine Systems is a leading provider of naval propulsion and tactical equipment support systems. This position requires a candidate who will specialize in the fabrication (machining) of high value large-scale precision metal components (low-volume / high-mix) and someone with a strong background and working knowledge of metal removal/machining fundamentals and computer numerical control (CNC) programming experience.

What You’ll get to Do:

  • Create and edit CNC programs that support the machining of large-scale, complex, precision metal components fabricated on multiple-axis CNC milling & turning machining centers (CAM file generation, post-processor machine code generation).
  • Perform technical data package review of components that require fabrication (CAD model & engineering drawing validation).
  • Perform machining process development & optimization (part setup/fixturing, machining strategy/order of operations, tool selection, speed/feed process parameter selection).
  • Identify, select, and procure appropriate tooling for job specific applications (based on part material, geometry, features, tolerances, system rigidity, and equipment capability).
  • Perform program prove-out validation (computer simulation tools, ‘table top’ peer reviews, First Time Process Reviews, machine dry runs).
  • Work with machinists, manufacturing engineers, and design engineers to identify process improvement opportunities (reduced machining/setup time, improved part quality, reduced manufacturing risk) and incorporate required design changes (customer driven changes, technical performance improvements, improved manufacturability).
  • Participate in and lead cross-functional teams comprised of machinists/operators, manufacturing engineers, production supervisors, supply chain representatives, quality engineers/inspectors, and operations/program management to support program schedule & performance goals, mitigate manufacturing risks, and improve operational efficiency.
  • This position is for a 1st Shift position; however, occasional extended shift, off-shift, and/or weekend support may be required.
  • Occasional travel may be required for training purposes or to participate in equipment selection/acceptance activities (less than 10%).

This position can be filled at a Principal CNC Programmer or Senior Principal CNC Programmer level.


Basic Qualifications:
*This position may be filled at higher level based on the following qualifications*

  • Bachelors of Science Degree with 5+ years of relevant experience; 3 years with a Masters; 0 years with a PhD (4 years of additional work experience may be considered in lieu of a degree).


  • Bachelors of Science Degree with 9+ years of relevant work experience; 7 years with a Masters; 4 years with a PhD (4 years of additional work experience may be considered in lieu of a degree).


  • 2+ years direct experience working in a machining CNC programming role.
  • Ability to read, interpret, and understand manufacturing blueprints and process plans.
  • 2+ years experience using Geometric Dimensioning and Tolerancing (GD&T).
  • Ability to create and edit CNC programs that support the machining of precision components.
  • Experience creating and/or editing 3D CAM files.
  • Ability to work swing, graveyard and weekend shifts (up to 20%).
  • Ability to obtain and maintain a Secret Security Clearance (US Citizenship).

Preferred Qualifications:

  • Experience/proficiency working with materials requirements planning (MRP), manufacturing execution systems (MES), and SAP experience preferred.
  • Demonstrated proficiency using Siemens NX CAD/CAM software to create NC programs for multiple-axis CNC milling & turning machining centers.
  • Detailed oriented, strong communication skills.

Salary Range: $92,200 USD - $138,400 USD
Salary Range 2: $114,300 USD - $171,500 USD

Employees may be eligible for 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 health and safety of our employees and their families is a top priority. The company encourages employees to remain up-to-date on their COVID-19 vaccinations. U.S. Northrop Grumman employees may be required, in the future, to be vaccinated or have an approved disability/medical or religious accommodation, pursuant to future court decisions and/or government action on the currently stayed federal contractor vaccine mandate under Executive Order 14042

Northrop Grumman is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity/Affirmative Action 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/AA and Pay Transparency statement, please visit U.S. Citizenship is required for most positions.

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What's great about
Northrop Grumman

  1. Be part of a culture that thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work.
  2. Use your skills to build and deliver innovative tech solutions that protect the world and shape a better future.
  3. Enjoy benefits like work-life balance, education assistance and paid time off.

Did you know?

Northrop Grumman leads the industry team for NASA’s James Webb Space Telescope, the largest, most complex and powerful space telescope ever built. Launched in December 2021, the telescope incorporates innovative design, advanced technology, and groundbreaking engineering, and will fundamentally alter our understanding of the universe.