Full-Time

Electron Optics Engineer

Posted on 11/14/2025

Atomic Semi

Atomic Semi

51-200 employees

Compact semiconductor fab producing chips

Compensation Overview

$125k - $188k/yr

+ Equity

San Francisco, CA, USA

In Person

Category
Hardware Engineering (1)
Required Skills
CAD
Requirements
  • A degree in Physics, Electrical Engineering, or something similar
  • 2+ years of hands-on work with precision electron or ion beam systems (designing, modeling, building, testing)
  • 5+ years total experience working on complex hardware systems, either in industry or research
  • A strong understanding of charged particle optics and electrostatic/magnetic fields
  • Comfortable working with high vacuum systems — you know your way around chambers, pumps, and component selection
  • Confident in mechanical CAD
Responsibilities
  • Design, analysis, and bring-up of electron-optical systems and related equipment including electron sources, lenses, detectors, beam steering, vacuum chambers, etc.
  • Create innovative solutions utilizing novel electron optical techniques
  • Electrostatics simulation, mechanical design, high vacuum, ray optics analysis.
  • Gathering requirements for designs to facilitate successful bring up of new semiconductor tooling
  • Interface with mechanical, electrical, manufacturing, and process engineers
Desired Qualifications
  • Experience with electrostatics simulation tools like SIMION, COMSOL, CPO2D, CPO3D
  • Electronics skills: usage of oscilloscopes, basic circuit design, grounding + shielding
  • Light-based optics experience
  • Experience with beam profiling or diagnostics
  • Have done tolerance analysis of electron beam systems

Atomic Semi builds and operates a compact semiconductor fabrication facility to manufacture chips for electronics, automotive, telecom, and more. It uses its own tools and processes to create chips with smaller, more efficient geometries and can offer custom fabrication services to clients. The company distinguishes itself from large fabs by being small, fast, and agile, developing its own manufacturing tools to quickly adapt to new technologies and market needs. Its goal is to provide nimble, efficient chip manufacturing that helps a wide range of tech companies get high-quality chips faster and with flexibility for evolving technology trends.

Company Size

51-200

Company Stage

Seed

Total Funding

$15M

Headquarters

San Francisco, California

Founded

2023

Simplify Jobs

Simplify's Take

What believers are saying

  • 60 engineers across disciplines drive rapid low-cost fab development.
  • Small-scale tools support high-speed prototyping for tech firms.
  • SF-based fab pushes quickly to advanced chip geometries.

What critics are saying

  • ASML's 80% lithography dominance blocks Atomic Semi's tool performance.
  • Zeloof's garage tech fails at scale; zero chips shipped since 2023.
  • TSMC and Samsung billions crush small-fab high-volume viability.

What makes Atomic Semi unique

  • Atomic Semi builds compact fabs for smaller wafers unlike traditional 300mm giants.
  • Founders Sam Zeloof and Jim Keller bring garage fab and 40-year expertise.
  • In-house 3D printers and e-beam writers enable agile tool invention.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

Unlimited Paid Time Off

401(k) Retirement Plan

Paid Parental Leave

Commuter Benefits

Wellness Program

Growth & Insights

Headcount

6 month growth

2%

1 year growth

8%

2 year growth

1%
INACTIVE