CNC Programmer (Mills & Lathes) – Mastercam Focus

Job Title: CNC Programmer – Mills & Lathes
Experience Level: 5–10 Years
Department: Manufacturing / Engineering
Reports To: CNC Programming Lead
Location: Santa Clarita Valley, California

Position Summary

We are seeking a skilled CNC Programmer with 5–10 years of experience programming both CNC milling and turning machines in a precision aerospace manufacturing environment. The ideal candidate will have strong experience using Mastercam to develop efficient, high-quality machining programs and will work closely with machinists, manufacturing engineers, and quality personnel to ensure parts meet all engineering and customer specific

This role requires strong knowledge of multi-axis machining, GD&T, tooling strategies, and aerospace quality requirements.

Key Responsibilities
CNC Programming
Develop, optimize, and maintain CNC programs using Mastercam for both CNC mills and CNC lathes.
Program 3-axis, 4-axis, and 5-axis milling operations where applicable.
Program CNC turning centers, including live tooling and mill-turn operations when applicable.
Generate toolpaths, verify machining strategies, and simulate programs to prevent collisions and inefficiencies.
Process Development

Review engineering drawings, models, and specifications to determine machining strategy.
Select appropriate tooling, fixtures, and machining methods to optimize cycle times and part quality.
Create setup sheets, tool lists, and work instructions for shop floor machinists.
Support first article runs and troubleshoot machining issues during production.
Continuous Improvement

Optimize programs to improve cycle time, tool life, and overall machining efficiency.
Collaborate with manufacturing leadership to implement lean manufacturing practices and reduce waste.
Assist with fixture design and manufacturing process improvements.
Production Support

Work closely with CNC machinists during setup and prove-out.
Provide technical support for production machining challenges.
Assist with troubleshooting machine alarms, tool wear, and dimensional issues.
Quality & Compliance

Ensure programs meet customer specifications and aerospace quality standards.
Support First Article Inspection (FAI) / AS9102 documentation when required.
Understand and apply GD&T principles to machining strategies.
Maintain revision control of programs and documentation.
Required Qualifications

5–10 years CNC programming experience in a precision machining environment.
Expert-level proficiency with Mastercam.
Experience programming both:
CNC Mills
CNC Lathes
Ability to read and interpret:
complex engineering drawings
CAD models
GD&T callouts
Experience with multi-axis machining strategies.
Strong understanding of cutting tools, speeds & feeds, and material behavior.
Experience with tight tolerance aerospace components.
Preferred Qualifications

Experience in aerospace or defense manufacturing.
Familiarity with machines such as:
Haas
Mori Seiki / DMG Mori
Mill-Turn platforms
Experience with fixture design.
Knowledge of AS9100 quality systems.
Experience with solid modeling CAD software (SolidWorks, Fusion, or similar).
Understanding of lean manufacturing or continuous improvement methodologies.
Key Skills

Mastercam Programming
Multi-Axis Machining
GD&T Interpretation
Tooling & Fixture Strategy
Process Optimization
Problem Solving
Cross-functional Communication

Equal Opportunity Employer / Disabled / Protected Veterans

The Know Your Rights poster is available here:
https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12.pdf

The pay transparency policy is available here:
https://www.dol.gov/sites/dolgov/files/ofccp/pdf/pay-transp_%20English_formattedESQA508c.pdf

For temporary assignments lasting 13 weeks or longer, AppleOne is pleased to offer major medical, dental, vision, 401k and any statutory sick pay where required.

We are committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation for any part of the employment process, please contact your staffing representative who will reach out to our HR team.

AppleOne participates in the E-Verify program in certain locations as required by law. Learn more about the E-Verify program.
https://e-verify.uscis.gov/web/media/resourcesContents/E-Verify_Participation_Poster_ES.pdf

We also consider for employment qualified applicants regardless of criminal histories, consistent with legal requirements, including, if applicable, the City of Los Angeles’ Fair Chance Initiative for Hiring Ordinance. Pursuant to applicable state and municipal Fair Chance Laws and Ordinances, we will consider for employment-qualified applicants with arrest and conviction records, including, if applicable, the San Francisco Fair Chance Ordinance. For Los Angeles, CA applicants: Qualified applications with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act.