Senior Software Engineer, Simulation

Atoms is building the machines that power the next era of progress.

Over the last decade, software has transformed the digital world. But the physical world, where food is made, minerals are mined, goods are moved, and industries are run, remains far less intelligent, far less efficient, and far more constrained. We’re changing that.

Atoms builds Physical AI— real-world robots for the industries that move civilization forward, starting with food, mining, and transport. Our systems are designed to understand, predict, and control the real world with precision, turning complex physical operations into something more reliable, more scalable, and more productive.

This work requires more than robotics. It requires deep integration across hardware, software, AI, operations, manufacturing, and real estate. We don’t just build machines in a lab. We deploy them into real environments, operate them, learn from them, and improve them until they work at scale.

We are roboticists, engineers, operators, and builders. We believe the next great technology companies will not only transform information, but the physical systems that shape everyday life.

If you want to work on hard problems with real-world impact, join us.

We are seeking a Senior Software Engineer to build the log replay and scenario execution systems at the core of our simulation platform. In this role, you will take a recorded log from storage, to a replayable test case, to a scored result, and own the execution, determinism, and reporting in between. You will do this across on-road and off-highway programs, and you will own the tooling other engineers use to run scenario suites.

• →Bachelor's degree in Computer Science, Robotics, Electrical Engineering, or a related field with 5+ years of software engineering experience, or a master's with 3+ years required.
• →Proficiency in C++ and Python, including the ability to read, navigate, and debug large codebases.
• →Experience building and operating data or test infrastructure at scale, including pipelines, batch execution, storage and indexing.
• →Experience with simulation, log replay, or large-scale automated testing for robotics or autonomous vehicles.
• →Working experience with a robotics middleware and its logging and replay tooling.
• →Experience handling autonomous driving or robotics sensor data across multiple modalities and timestamps, including camera, LiDAR, and radar.
• →Practical understanding of determinism and reproducibility, including clock control, seed management, and configuration pinning.
• →Experience integrating test workloads into continuous integration.
• →Working fluency with modern AI coding and agentic development tools.
• →Clear written communication covering design notes and test results.
• →Willingness to travel occasionally to deployment and test sites.
• →Ability to work onsite five days a week in San Francisco.

This role is based in our San Francisco office. Atoms is a company driven by invention and continuous change - we are constantly reimagining our industries, building new products, and refining how we operate. We do our best work together. That’s why all of our office-based teams work onsite, five days a week.

The base salary range for this role is $195,000 - $246,000 per year.

Actual compensation will be determined on an individual basis and may vary depending on experience, skills, and qualifications.

Base salary is just one part of your total rewards package. You may also be eligible for equity awards.

#LI-Onsite