Principal Controls Software Engineer

Commonwealth Fusion Systems (CFS) is at the forefront of fusion energy development, working to revolutionize the energy industry through commercially viable fusion power plants. Since 2018, they've secured over $2 billion in funding, making them the most well-funded fusion energy company in the US.

As a Principal Controls Software Engineer at CFS, you'll play a crucial role in developing and implementing control systems for complex fusion power equipment. The position combines expertise in controls engineering, software development, and industrial automation, requiring both technical depth and systems-thinking capabilities.

The role offers an exciting opportunity to work on cutting-edge fusion energy technology, where you'll collaborate with R&D teams and engineering peers to develop machine and operational concepts. You'll be responsible for creating robust system architectures that integrate PLCs, safety devices, HMIs, and servo drives, while ensuring compliance with industry standards and safety regulations.

Key aspects of the role include developing control software, implementing safety systems, designing electrical schematics, and optimizing automated operations. You'll work with modern tools and technologies, including GitHub, CI/CD pipelines, and industrial control platforms like Beckhoff and Siemens.

This position is ideal for an experienced controls engineer who is passionate about clean energy and wants to make a significant impact in the fusion energy field. The role offers competitive compensation ($150,000-$250,000), equity, comprehensive benefits, and the opportunity to work with a talented team dedicated to solving one of the world's most pressing energy challenges.

The position is based in the San Francisco Bay Area and requires occasional travel and flexible working hours. You'll be joining a company that values diversity, fosters professional growth, and maintains a fast-paced, mission-driven culture focused on integrity, execution, impact, and self-critique.