Northrop Grumman’s Space Sector invites you to bring your pioneering spirit to our collaborative teams. As a CNC Programmer 3 located in Commerce, CA, you’ll be a linchpin in missions of paramount importance, defining the art of the possible from day one.
Our Commerce, CA site is in search of CNC Programmer 3 to join our growing team on a 9/80 schedule.
The CNC Programmer 3 is a specialized professional responsible for converting complex 3D engineering designs into precise numerical code (G-code/M-code) that drives multi-axis machining centers using CAD/CAM software. In the aerospace industry, this role requires working with exotic materials (titanium, Inconel, aluminum alloys) and maintaining extremely tight tolerances, often within ±0.001”.
Core Responsibilities
Program Development: Utilize software such as Mastercam, CATIA, or Siemens NX to create toolpaths for 3-, 4-, and 5-axis milling and mill-turn machines. Designing complete NC programs for complex 3, 4, and 5-axis mills, lathes, and mill-turns using CATIA V5/V6.
CAD/CAM Integration: Analyze 3D CAD models and blueprints to determine the most efficient machining sequences and work-holding strategies.
Tooling & Fixture Design: Design custom fixtures and jigs in CAD to secure aerospace components during the machining process.
Simulation & Verification: Conducting machine simulations (e.g., using Veri cut or Completed) to ensure error-free toolpaths before physical production.
Process Optimization: Continuously refine programs to reduce cycle times, improve tool life, and ensure consistent quality for high-value aerospace parts like landing gear or turbine blades. Researching tools and methods to reduce cycle times, improve part quality, and ensure cost-effective manufacturing
Documentation: Create detailed setup sheets and tool lists to guide machinists through the production process.
Shop Floor Support: Troubleshooting programming issues during setup, performing "prove-outs" on the floor, and mentoring machine operators.
Basic Qualifications
Education: High school diploma/GED and 4+ years of experience developing CNC programs for multi-axis machines in an aerospace environment
Software Proficiency: Deep knowledge of CAD software (e.g., AutoCAD, SolidWorks) and CAM software (e.g., Mastercam, Gibbs CAM).
Blueprints & GD&T: Expert ability to interpret complex technical drawings and Geometric Dimensioning and Tolerancing (GD&T) symbols.
Mathematical Aptitude: Strong foundation in Trigonometry and Geometry for calculating complex cutting paths and angles.
Technical Knowledge: Deep understanding of G-code, M-code, and post-processing; expertise in machining aerospace alloys (Titanium, Inconel, Aluminum).
Preferred Qualifications
Regulatory Compliance: Familiarity with AS9100 standards and export control regulations (ITAR/EAR).
Associate's degree in a mechanical or machining related curriculum or 6 years of machining and programming experience
Skills Required
- High school diploma/GED and 4+ years of experience developing CNC programs for multi-axis machines in an aerospace environment
- Deep knowledge of CAD software (AutoCAD, SolidWorks) and CAM software (Mastercam, Gibbs CAM)
- Experience creating NC programs for 3-, 4-, and 5-axis mills, lathes, and mill-turn machines (CATIA V5/V6, Siemens NX, Mastercam)
- Expert ability to interpret complex technical drawings and Geometric Dimensioning and Tolerancing (GD&T) symbols
- Strong foundation in Trigonometry and Geometry for calculating complex cutting paths and angles
- Deep understanding of G-code, M-code, and post-processing
- Expertise machining aerospace alloys (Titanium, Inconel, Aluminum) and maintaining tight tolerances (±0.001")
- Ability to conduct machine simulations (e.g., Vericut or Completed) to verify toolpaths before production
- Familiarity with AS9100 standards and export control regulations (ITAR/EAR)
- Associate's degree in a mechanical or machining related curriculum or 6 years of machining and programming experience
Northrop Grumman Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Northrop Grumman and has not been reviewed or approved by Northrop Grumman.
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Retirement Support — 401(k) matching is considered strong, with additional defined-benefit coverage for certain cohorts and options like catch-up contributions. Retirement programs are repeatedly highlighted as a core strength of the total rewards.
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Leave & Time Off Breadth — PTO, company-paid holidays, and compressed work schedules (such as 9/80) provide meaningful time away and flexibility. These scheduling options are cited as a major quality-of-life benefit across many locations.
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Parental & Family Support — Paid parental leave alongside caregiver leave, adoption assistance, and back-up care supports a range of family needs. These programs have been expanded recently, signaling continued investment in family support.
Northrop Grumman Insights
What We Do
We are a close-knit community of big thinkers collaborating to keep the world safe. Our passion, creativity and expertise bring next-level technology solutions to life in autonomous systems, cyber, C4ISR, strike, space, and logistics and modernization for our customers around the globe. On the Northrop Grumman team, you’ll join our pursuit of excellence immersed in a dynamic culture of innovation and respect. Your unique perspective will help achieve our shared vision for the future of global security. Every step of the way, you'll be supported by world-class training, employee resource groups and a comprehensive benefits package that enables greater health and happiness for you and your family. Worldwide and across disciplines, we’re challenging what’s possible for technology to protect people and places from undersea to outer space and into cyberspace. And we see the impact of our performance every day. We are Northrop Grumman, and we work on what matters—now, you too can make a difference. Explore opportunities in engineering, IT, manufacturing, business management, cybersecurity and more with us. Northrop Grumman is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity/Affirmative Action Employer.









