Senior CNC Machinist – Live Tooling, Multi‑Axis (LA)

General Matter, Inc.; Los Angeles (CA); Hybrid; USD 37,000 - 83,000; Full time

Job summary

General Matter, Inc. is seeking a highly skilled Senior CNC Machinist with deep hands-on experience across CNC Mills and CNC Lathes, focusing on live tooling programming and complex multi-axis work.

This role blends production machining with R&D to enable rapid iteration and scalable manufacturing. The ideal candidate partners with engineering to optimize processes, improve throughput, and drive cycle-time reductions.

Qualifications

• High school diploma or equivalency certificate.
• 7+ years of CNC machining experience in a mill/lathe environment.
• Strong expertise in live tooling programming.
• Proven experience programming and running complex multi-axis parts.
• Strong understanding of GD&T.

Responsibilities

• Program, set up, and operate CNC Mills and CNC Lathes, including live tooling and multi-axis operations.
• Develop and optimize CNC programs (G-code and CAM-generated) for complex geometries and tight tolerances.
• Execute first-article builds, prove-outs, and low-volume production runs in an R&D environment.
• Troubleshoot machining issues related to tooling, fixturing, materials, and machine dynamics.
• Design, fabricate, and iterate custom fixtures and workholding solutions.
• Collaborate with Manufacturing Engineering to improve part stability, repeatability, and setup efficiency.
• Lead or support cycle-time reduction initiatives through toolpath optimization, tooling selection, and process redesign.
• Identify opportunities to reduce setup time, scrap, and rework.
• Contribute to standard work, setup documentation, and machining best practices.
• Support the transition of R&D processes into stable, repeatable production workflows.
• Work closely with design and manufacturing engineers during early-stage development.
• Provide manufacturability feedback on part designs (DFM).
• Support rapid prototyping, design changes, and engineering experiments with short turnaround times.

Skills

Live tooling programming

Multi-axis machining

GD&T

Blueprint reading

Education

High school diploma or equivalency certificate

Tools

Mastercam

Fusion 360

NX

Job description

General Matter, Inc. is seeking a highly skilled Senior CNC Machinist with deep hands-on experience across CNC Mills and CNC Lathes, focusing on live tooling programming and complex multi-axis work.

This role blends production machining with R&D to enable rapid iteration and scalable manufacturing. The ideal candidate partners with engineering to optimize processes, improve throughput, and drive cycle-time reductions.