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
At Atomic Semi, we’re building a fast, small semiconductor fab from the ground up. The software team is responsible for everything that makes the fab run—writing the code that controls, manages, automates, and orchestrates the hardware that powers chipmaking.
About the role
We are seeking a Rust Software Engineer to help build the next generation of high-performance tools for chip fabrication and design. These tools blend real-time collaboration, computational geometry, GPU-accelerated visualization, simulation, interactive editing, and data processing.
This is a broad, multi-domain, hands-on role. You’ll work across everything from low-level systems and data synchronization, to high-performance rendering, rich UI/UX editing tools, and distributed infrastructure. The software you build will help engineers design and understand real, physical systems.
We’re open to a range of experience levels — from exceptional early-career engineers to senior and staff-level builders. There isn’t a single background we’re optimizing for. What matters most is that you’ve already built real things, you love getting close to the metal, and show strong signs of engineering excellence. If you’re excited by performance engineering, building complex features from scratch, and learning new domains quickly, this is a great place for you.
A portfolio or GitHub is generally required to apply: show us the things you’ve built! For us, a good portfolio includes evidence of strong engineering skills and curiosity.
Responsibilities
Build deeply interactive editing tools with low-latency, CAD- or Figma-like interfaces for geometry manipulation, routing, annotation, and measurement
Develop production-grade Rust software targeting both native and WebAssembly environments
Architect real-time collaborative systems, including state synchronization, conflict resolution, and efficient data transmission
Implement efficient algorithms for geometry querying, graphs, and routing
Build high-performance rendering and visualization pipelines, from GPU-accelerated rendering and spatial indexing to streaming massive datasets, visualizing millions of polygons, or rendering complex 3D fields
Continuously profile and optimize CPU, GPU, memory, and network performance to push the limits of responsiveness and scale
Own major features end-to-end and work closely with internal users, including process engineers and circuit designers, to deliver powerful, intuitive tools that solve real problems
Required Experience
BS in Computer Science, Computer Engineering, or demonstrated exceptional skill in software engineering
Strong programming skills in Rust, or significant C++/systems programming experience and a strong desire to learn Rust quickly
Solid understanding of systems fundamentals: memory, performance, concurrency
Experience building non-trivial software projects from scratch (personal, academic, or professional)
Interest in one or more of the following areas: real-time systems, computational geometry, algorithms, computer graphics, visualization
Nice-to-have
Experience with interactive software such as Figma, Blender, Unity, OnShape or other CAD tool, Ableton Live, KiCad, or scientific computing environments
Familiarity with WebAssembly or building rich applications
Experience with schema evolution, database migrations, or serialization formats like Protobuf
Understanding of collaborative or distributed systems (e.g., CRDTs, OT, WebSockets)
Exposure to geometry or graph algorithms, optimization, or simulation (including spatial data structures and hierarchical representations)
Experience with graphics rendering pipelines (WebGPU, Vulkan, OpenGL)
Exposure to advanced 2D/3D visualization, simulation, or novel user interfaces
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 $125,000 – $195,000. Compensation is determined 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.
Top Skills
What We Do
Atomic Semi is building a small, fast semiconductor fab. We’ll build the tools ourselves then quickly push them to more advanced geometries. We’re building a small team of exceptional, hands-on engineers to make this happen.
