Head of Prototyping & CNC Prototype Machinist

Comma.ai, Inc.; San Diego (CA); On-site; USD 80,000 - 120,000; Full time

Benefits offered by this job

Medical, dental and vision insurance

Flexible paid time off

On-site gym and yoga studio

Chef-prepared lunch and dinner

Visa and green-card sponsorship

Job summary

comma.ai, Inc. is building in-house prototype machining in San Diego. We are seeking a hands-on CNC machinist to lead prototype manufacturing for current and future products, taking parts from CAD models through finished prototypes.

You will set up Haas machines, develop CAM programs, plan tooling and fixturing, and work closely with the hardware team. This is a leadership role owning the shop and helping grow a small, high-ownership team in a fast-moving environment.

Qualifications

• Hands-on CAM programming experience required.
• CNC machine setup and machining experience required.
• Ability to take a design from concept through a working prototype.
• Strong attention to detail and problem-solving skills.
• Ability to independently plan tooling, fixturing and machining processes.
• Examples of projects you have personally built.
• English-language proficiency.

Responsibilities

• Run and continue building out comma.ai’s in-house prototype machine shop.
• Lead prototype manufacturing for current and future comma.ai products.
• Take parts from CAD models or early design concepts through finished prototypes.
• Develop CAM programs and machining strategies.
• Plan setups, tooling, workholding and fixturing.
• Set up and operate CNC milling and turning equipment.
• Inspect completed components and verify dimensional accuracy.
• Troubleshoot machining and manufacturing challenges.
• Iterate quickly with the hardware team as designs evolve.
• Recommend additional machines, tooling and shop equipment.
• Help establish efficient processes for bringing prototype work fully in-house.

Skills

CAM programming

CNC setup

Prototype ownership

Attention to detail

Design-to-prototype

Tooling planning

Project examples

English proficiency

Tools

CAD software

CAM software

Haas CNC

Job description

comma.ai, Inc. is building in-house prototype machining in San Diego. We are seeking a hands-on CNC machinist to lead prototype manufacturing for current and future products, taking parts from CAD models through finished prototypes.

You will set up Haas machines, develop CAM programs, plan tooling and fixturing, and work closely with the hardware team. This is a leadership role owning the shop and helping grow a small, high-ownership team in a fast-moving environment.