Prototype CNC Machinist (Haas 3-Axis) – Hands-On

Bellwether Coffee; Berkeley (CA); On-site; USD 48,000 - 76,000; Full time

Job summary

Bellwether Coffee, headquartered in Berkeley, CA, is seeking a hands‑on Prototype Machinist (CNC) to help our hardware team rapidly produce prototype parts. You will set up Haas 3‑axis mills, write toolpaths in Fusion, read GD&T drawings, and verify parts in a small, fast‑paced shop.

You’ll work directly with hardware engineers to troubleshoot designs, optimize setups, and ensure parts meet tight tolerances while keeping safety and organization top of mind.

Qualifications

• Hands-on setup, running, and troubleshooting on HAAS 3-axis mills.
• Strong CAM programming in Autodesk Fusion.
• Able to program complex 3D parts with multiple setups and custom fixturing.
• Experience machining stainless steel and aluminum with appropriate feeds and tools.
• Familiar with GD&T and inspection using hand tools.

Responsibilities

• Program, set up, and run HAAS 3-axis mills to make prototype and short-run parts.
• Write toolpaths in Autodesk Fusion, including 3D contours and freeform surfaces.
• Read drawings and models (including GD&T) and figure out how to hold and cut the part.
• Choose tools, fixtures, speeds, and feeds to hit tolerance and finish.
• Check parts with calipers, mics, gauges, etc., during and after the run.
• Fix problems when parts or programs don’t come out right, and improve the process over time.
• Work with mechanical engineers on design-for-manufacturing and prototype builds.
• Keep the shop safe, clean, and organized, and keep machines maintained.

Skills

HAAS 3-axis mills

Fusion CAM

GD&T reading

Tolerance inspection

Problem solving

Cross-functional teamwork

US work authorization

Stainless/Aluminum machining

Tools

Autodesk Fusion

G-code editing

CNC simulation

Job description

Bellwether Coffee, headquartered in Berkeley, CA, is seeking a hands‑on Prototype Machinist (CNC) to help our hardware team rapidly produce prototype parts. You will set up Haas 3‑axis mills, write toolpaths in Fusion, read GD&T drawings, and verify parts in a small, fast‑paced shop.

You’ll work directly with hardware engineers to troubleshoot designs, optimize setups, and ensure parts meet tight tolerances while keeping safety and organization top of mind.