Put your skills to the test by pushing the boundaries of what’s possible. From global defense to sustainment and modernization to mission readiness, your experience and ability will make it a reality. Our programs are built on equal parts of curiosity and collaboration. Our combined effort means our customers can connect and defend millions of people around the world. With Northrop Grumman, you’ll have the opportunity to be an essential part of projects that will define your career, now and in the future.
Northrop Grumman Defense Systems is searching for an on-site Principal Manufacturing Engineer to be part of our Platform Systems Modernization Fabrication Center, in Lake Charles, Louisiana. Engineer Manufacturing supports the development, optimization, and sustainment of manufacturing processes for structural aircraft components.
This role requires proficiency in CNC programming and CAD/CAM for 3-axis and 5-axis machining, with a strong focus on producibility, quality, cost, and schedule performance. The engineer will work closely with design engineering, quality, and production teams to ensure compliant, efficient, and repeatable manufacturing solutions.
Essential Functions:
Develop, validate, and optimize CNC programs for 3-axis and 5-axis machining of structural aircraft components (aluminum, titanium, and/or steel).
Create and modify CAD/CAM models, tool paths, and work instructions to support production and new product introduction (NPI).
Support manufacturing planning including fixture design, tooling selection, cutting strategies, and cycle time optimization.
Provide shop floor support to troubleshoot machining issues, improve yields, and resolve nonconformances.
Ensure manufacturing processes comply with engineering specifications, GD&T, AS9100, and customer requirements.
Collaborate with design engineering to influence part designs for manufacturability and cost reduction (DFM/DFA).
Support process qualification, first article inspection (FAI), and production readiness reviews.
Drive continuous improvement initiatives focused on safety, quality, cost, and delivery.
Document manufacturing processes, NC programs, and engineering changes per company procedures.
NGSkills
Basic Qualifications:
High School diploma or equivalent and a minimum of 9 yrs of years of CNC/CAM experience in an aerospace manufacturing environment. A Bachelor’s degree in manufacturing engineering, Mechanical Engineering, or related field and a minimum of 5 years of CNC/CAM experience in an aerospace manufacturing environment, may also be considered.
3+ years of manufacturing engineering experience in a machining environment.
Demonstrated proficiency in CNC programming for 3-axis and 5-axis machines.
Experience using CAD/CAM software (e.g., CATIA, SolidWorks, NX, Mastercam, Creo, or similar).
Experience machining structural aircraft components or other high-tolerance aerospace parts.
Strong understanding of GD&T, machining fundamentals, tooling, and fixturing.
Ability to read and interpret complex engineering drawings and specifications.
Effective communication skills and ability to work cross-functionally.
U.S. Citizenship and the ability to obtain a Secret Security Clearance.
Willing/able to travel 10%.
Willing/able to work any shift as required to support the 24/7 operations.
Preferred Qualifications:
A Bachelor's degree in Manufacturing Engineering, Mechanical Engineering, or related field.
Aerospace manufacturing experience with AS9100 or equivalent quality systems.
MRB Experience.
Experience machining aluminum and titanium aerospace alloys using CNC horizontal and vertical mills.
Demonstrated experience using Mastercam, SolidWorks, NX and Calypso software.
Familiarity with additive manufacturing.
Familiarity with lean manufacturing and continuous improvement methodologies.
Experience supporting production sustainment in a high-mix, low-volume environment.
Knowledge of manufacturing data systems (MES, PLM, or ERP).
Works under only general direction. Independently determines and develops approach to solutions.
Skills Required
- High school diploma or equivalent and 9+ years CNC/CAM aerospace experience, or Bachelor's degree and 5+ years CNC/CAM aerospace experience
- 3+ years manufacturing engineering experience in a machining environment
- Proficiency in CNC programming for 3-axis and 5-axis machines
- Experience using CAD/CAM software (e.g., CATIA, SolidWorks, NX, Mastercam, Creo)
- Experience machining structural aircraft components or high-tolerance aerospace parts
- Strong understanding of GD&T, machining fundamentals, tooling, and fixturing
- Ability to read and interpret complex engineering drawings and specifications
- Effective communication skills and ability to work cross-functionally
- U.S. Citizenship and ability to obtain a Secret security clearance
- Willing/able to travel up to 10%
- Willing/able to work any shift to support 24/7 operations
- Bachelor's degree in Manufacturing or Mechanical Engineering or related field
- Aerospace manufacturing experience with AS9100 or equivalent quality systems
- MRB (Material Review Board) experience
- Experience machining aluminum and titanium aerospace alloys using CNC horizontal and vertical mills
- Demonstrated experience using Mastercam, SolidWorks, NX and Calypso software
- Familiarity with additive manufacturing
- Familiarity with lean manufacturing and continuous improvement methodologies
- Experience supporting production sustainment in a high-mix, low-volume environment
- Knowledge of manufacturing data systems (MES, PLM, or ERP)
- Ability to work independently under general direction and develop approaches to solutions
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.








