Staff HPC Network Engineer

**Who we are** 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. **What you’ll do** We’re seeking a HPC Network Engineer to join our founding team who will design and run the high-performance network that connects our GPU compute — building a fast, reliable fabric today and the architecture to scale it as our cluster grows. - Design, optimize, and scale the high-performance network fabric that interconnects our GPU and CPU compute. - Build the low-latency networking that keeps our training and simulation workloads fed and fast. - Own capacity planning and lead network projects end to end, from design through deployment. - Partner with vendors to select and engineer switches that set us up for the next stage of compute growth. - Develop scripts and processes that automate network operations and increase efficiency. - Collaborate across the infrastructure team to solve cross-discipline problems with immediate operational impact. **What we’re looking for** - Experience designing, deploying, and scaling networks for HPC or GPU compute environments. - Hands-on experience managing switches across platforms such as Arista (EOS), Cisco (NX-OS), Nvidia (Cumulus), and/or SONiC. - Solid capacity-planning and project-management skills, with the judgment to scale as we grow. - Packet decoding/analysis (tcpdump, Wireshark) and knowledge of fiber optics and high-speed cabling up to 800 Gbps. - Familiarity with public cloud networks (AWS, GCP, Azure) and config management (Ansible, Salt). - Familiarity with Python, Prometheus, Grafana, ELK, and GitHub; awareness of data center power and cooling. - Meticulous attention to detail, proactive problem-solving, and excellent communication. **Why join us** At Atoms, you’ll work on one of the defining challenges of our time — bringing automation into the physical world to drive real, lasting impact. We exist to uncover valuable unknown truths and turn them into progress, which means constantly pushing beyond what’s known and building what doesn’t yet exist. The work is ambitious and often challenging, but it’s grounded in a shared sense of purpose and a team committed to seeing it through together. Our work only matters if it serves others, and we know that meaningful progress depends on the trust of the people we serve and the strength of our team — so we invest in both, creating an environment where you can do your best work and grow. **What else you need to know** 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 **$224,000 - $284,000 per year.** Act…