5-Axis Prototype Machinist (NPI)

Therm-x of California; Hayward (CA); On-site; USD 52,000 - 69,000; Full time

Benefits offered by this job

Competitive pay

Medical insurance

Dental insurance

401(k)

Paid time off

Job summary

Therm-x of California is seeking a Prototype Machinist to join the NPI team in Hayward, CA. You will read drawings, program and run a 5-axis Okuma mill and CNC lathe, and develop first articles for new heater and sensor designs.

The role emphasizes creating accurate prototypes, selecting tools, and ensuring tolerances while collaborating with engineers. A strong CAM background and 5-axis experience are essential for success.

Qualifications

• Hands‑on 5-axis CNC milling experience — programming, set‑up, and operation.
• Strong CAM programming skills — Mastercam, HSM, Esprit, NX CAM, or equivalent.
• Solid grounding in milling principles: tool selection, feeds and speeds, fixture choices.

Responsibilities

• Program, set up, and operate the 5-axis Okuma mill (and CNC lathe) to produce prototype parts, tools, and fixtures.
• Generate efficient CAM programs from 3D models for multi‑sided toolpaths.
• Verify toolpaths in simulation before cutting to catch collisions.
• Select cutting tools, feeds, speeds, and toolpath strategies for prototypes.
• Choose appropriate workholding for one‑off and low‑quantity parts.
• Read and interpret GD&T drawings and confirm critical dimensions.
• Inspect parts using calipers, micrometers, height gauges; record First Article Inspection results.
• Collaborate with mechanical engineers on manufacturability and DFМ input.
• Build test fixtures and assist NPI engineers with prototype assembly and data collection.

Skills

5-axis CNC milling

CAM programming

GD&T reading drawings

Inspection tools use

Safety-first mindset

Effective communication

Tools

Okuma (OSP control)

Mastercam

HSM

Esprit

NX CAM

SolidWorks/Inventor (basic)

Job description

Therm-x of California is seeking a Prototype Machinist to join the NPI team in Hayward, CA. You will read drawings, program and run a 5-axis Okuma mill and CNC lathe, and develop first articles for new heater and sensor designs.

The role emphasizes creating accurate prototypes, selecting tools, and ensuring tolerances while collaborating with engineers. A strong CAM background and 5-axis experience are essential for success.