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Software Is Eating the World

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Comma.ai

a16z portfolio company

CNC Machinist (Head of Prototyping)

Location
San Diego, CA
Work arrangement
On-site

About the role

Posted Sep 17, 2026

We're building SendCutSend at home. The shop has a Haas VF2, lathe, 3D printers, and a budget for any other tools we'll need to bring prototyping fully in-house. You'll own parts from CAD to finished prototype: CAM, setup, fixturing, machining, inspection, and iteration with the hardware team. You'll build prototypes for all future comma products, from comma four to the exabox.

Qualifications

  • Experience with CAM, CNC setup, and machining
  • Excellent attention to detail
  • Resourceful enough to take ambiguous designs from sketch to working prototype
  • Haas experience is a plus
  • Mechanical engineering and CAD skills are a plus

How to apply

Email work@comma.ai with examples of cool projects you've built.

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At a glance

Location
San Diego, CA
Workplace
On-site
Team
hardware
Apply for this role

You’ll be taken to Comma.ai to apply.

The company

Comma.ai

Comma.ai

Comma is an autonomous car kit.

Series A11–50 employeesAI
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