SoftwareEngineer,PlantControl

About Helion We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone. Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant. This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.   WHAT YOU WILL BE DOING As a Software Engineer on the Plant Control team, you will help design, build, and scale the software systems that operate Helion’s fusion generators and the Orion fusion power plant. You will work across control systems, diagnostics, data infrastructure, operator interfaces, automation, and integration with electrical, mechanical, firmware, and science teams. This is a generalist software role for someone who is comfortable moving between architecture and implementation, prototypes and production systems, and high-level plant design and hands-on machine operation. You will build software that interfaces with real hardware, supports rapid engineering iteration, and helps turn experimental fusion systems into reliable power plant infrastructure. You will work onsite at our Everett, WA office. YOU WILL - Design, build, and maintain software for plant control, diagnostics, automation, and operator workflows - Develop interfaces that connect d