Prototype Machinist (CNC)

About Us

Headquartered in Berkeley, CA, Bellwether Coffee is working to positively transform the coffee industry by making coffee roasting more accessible and sustainable.

Our revolutionary electric, ventless commercial coffee roaster does not require gas lines or expensive ventilation. It’s the most consistent and controllable roaster available, has the lowest carbon footprint of any commercial roaster ever made, and was designed by coffee people who want a better future. Our roasting platform allows Bellwether customers to easily and responsibly source green coffee from incredible coffee farms around the world, expertly roast using artisan-crafted roast profiles, and share fresh, delicious coffee!

About this Role

This role will report to the Director of Hardware Engineering. We're looking for a hands-on CNC machinist to help us make prototype parts fast, so our engineers can test ideas and get them into production. It's a small shop, so you'll set up your own jobs, write your own programs, check your own parts, and tell us when a design won't work. We're open to part-time or full-time for the right person.

Job Location

The role requires on-site presence at Bellwether’s Berkeley HQ.

Primary 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

Qualifications

Years of hands-on time on HAAS 3-axis mills: setup, running, and troubleshooting on the machine

Strong CAM programming in Autodesk Fusion

Ability to program complex 3D parts on a 3-axis machine, including multiple setups and custom fixturing

Lots of experience machining stainless steel and aluminum, including choosing tools and feeds for each

Experience running Haas High Speed Machining (HSM), including setting G187 smoothness and accuracy for roughing and finishing passes

Experience holding tight tolerances and inspecting with hand measuring tools

Nice to have: experience assembling, wiring, or debugging electromechanical prototypes (harnesses, sensors, motors, heaters); 4th-axis or 5-axis experience; hand-editing G-code at the HAAS control; wire EDM or surface grinding; manual mill, lathe, and saw experience; enough GD&T knowledge to push back on a drawing; sheet metal, food equipment, or appliance experience

Strong communicator and collaborator, comfortable working across cross-functional teams

Self-starter and operates with urgency

Takes ownership and embraces accountability with the ability to manage tasks with minimal supervision

You are authorized to work in the U.S. without Visa Sponsorship

Compensation: $35.00 - $55.00 per hour

We are an Equal Opportunity Employer. We do not discriminate on the basis of race, color, religion, gender, sexual orientation, pregnancy, national origin, ancestry, age, marital status, physical or mental disability, genetic information, medical condition, veteran status, or any other class protected by local, state or federal law.