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Atomic Semi

Senior Mechanical Engineer

Sorry, this job was removed at 04:19 p.m. (PST) on Thursday, Jun 05, 2025
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In-Office
San Francisco, CA
150K-220K Annually
In-Office
San Francisco, CA
150K-220K Annually

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About Atomic Semi

Atomic Semi is building a small, fast semiconductor fab.

It’s already possible to build this with today’s technology and a few simplifications. We’ll build the tools ourselves so we can quickly iterate and improve.

We’re building a small team of exceptional, hands-on engineers to make this happen. Mechanical, electrical, hardware, computer, and process. We’ll own the stack from atoms to architecture. Our team is optimistic about the future and we want to continue pushing the limits of technology.

Smaller is better. Faster is better. Building it ourselves is better.

We believe our team and lab can build anything. We’ve set up 3D printers, a wide array of microscopes, e-beam writers, general fabrication equipment - and whatever is missing, we’ll just invent along the way.

Atomic was founded by Sam Zeloof and Jim Keller. Sam is best known for making chips in his garage, and Jim has been a leader in the semiconductor industry for the past 40 years.

About the team

The Senior Mechanical Engineering is responsible for designing, prototyping, and building semiconductor fabrication equipment. Their knowledge and experience allows them to develop new technologies and create innovative designs to improve the speed, accuracy, and efficiency of semiconductor fabrication.

About the role

As a senior mechanical engineer, you’ll work with a full-stack team to build fab equipment. You’ll collaborate with Mechanical, Electrical, and Process engineers to build things like lithography, deposition, vacuum chambers, nanometer precision motion control, plasma etching systems, etc.


We are seeking a dynamic Mechanical Engineer with a proven track record of rapidly prototyping complex systems and advancing them to the next stage of production. The ideal candidate moves through design cycles fast and can own the end to end process. Our philosophy is to get things built/tested in days or weeks, not months. Because of this, a portfolio is required to apply: show us the things you’ve actually built!

To be successful in this role, you should not only excel in mechanical design, but also possess a keen interest or experience in diverse disciplines such as physics, chemistry, optics, fluids, and heat transfer.

Responsibilities

  • Design and develop precision mechanical components and systems for scientific instruments

  • Work with manufacturers and tools to prototype and manufacture mechanical systems

  • Test and iterate on mechanical systems based on their performance

  • Create thorough documentation (CAD, drawings, design rationale, etc.)

Required Experience

  • Bachelor's degree or higher, or equivalent experience

  • Minimum 8+ years of industry experience in mechanical engineering

  • Strong experience with mechanical system design and analysis

  • Experience with rapid prototyping, manual machining, 3D printing

  • CAD (SolidWorks / Onshape), including FEA, 2D drawings, simulations, etc.

  • Ability to design for conventional machining and additive manufacturing

  • Experience with tolerance analysis and understanding of GD&T

Nice-to-haves

  • Familiarity with semiconductor processing

  • Experience designing for high voltage, vacuum, and EM fields

  • Precision engineering experience (vacuum chamber, nanoscale mechanical precision, microfluidics, etc.)

  • Experience with Python scripting and data visualization

Working at Atomic Semi

We’re an early-stage hardware startup with solid funding, world-class advisors, and a lab/office in San Francisco, CA. 

Compensation: Atomic Semi is committed to fair and equitable compensation practices. The annual salary range for this role is $150,000 – $220,000 Compensation is determined within the range based on your qualifications and experience. Our total compensation package also includes generous equity in Atomic Semi.

Benefits: Atomic Semi offers the following benefits, subject to applicable eligibility requirements: 

  • Medical, Dental, and Vision insurance

  • Generous Paid Time Off inclusive of Holidays and Sick Time

  • Visa Sponsorship

  • Life and Disability Insurance

  • Paid Parental Leave

  • 401(k) retirement plan

  • Weekly Learning & Development opportunities

  • Commuter Benefits including Parking and Late Night Uber rides from the office

  • Lunches daily, Dinners 3x per week, Stocked Office Kitchen with Snacks and Spindrifts

We are an equal opportunity employer and do not discriminate on the basis of race, religion, national origin, gender, sexual orientation, age, veteran status, disability or other legally protected statuses.

Export Control Analysis: This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.

HQ

Atomic Semi San Francisco, California, USA Office

San Francisco, CA, United States

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