Controls Engineer

Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.

Combining decades of research, top talent, and new technologies, we’re designing and building commercially viable fusion power plants. And we're working with policymakers, suppliers, and many others to build the energy industry of the future.

We’re in the best position to make it happen. Since 2018, we’ve raised $4 billion of capital, making us the largest and leading fusion company in the world.

Now we’re looking for more thinkers, doers, builders, and makers to join us. People who’ll bring new perspectives, solve tough problems, and thrive as part of a team.

If that’s you and this role fits, we want to hear from you.

As a Controls Engineer, you are proficient in most or all core functions of your discipline, executing mid-to-long term assignments that are loosely defined. You operate with general guidance from management, increasingly taking independent ownership of developing execution approaches for equipment and process concepts.

You will generate work plans and define milestones for your own tasks, identifying and mitigating lower-risk items. You will provide technical leadership on short-term problems within your group's scope and lead formal design reviews with cross-functional teams.

• Independently own the complete lifecycle — physical mounting, pneumatic/electrical integration, and PLC I/O mapping through commissioning — for smaller equipment components and upgrades, handing off to Manufacturing Engineering
• Support production equipment on the floor — troubleshoot faults, restore uptime, and follow through with root‑cause analysis and preventative fixes
• Provide technical leadership on short‑term problems within your group's scope; lead formal design reviews with cross‑functional teams (equipment/MEs)
• Contribute to system architectures and electrical schematics, applying and standardizing elements compliant with NFPA
  79/NEC/UL508A standards
• Write and debug PLC structured text with an emphasis on code that is organized, documented, maintainable, and reusable
• Contribute to department policies, tool development, and the characterization of automated processes using data‑driven approaches like Cpk and Gage R&R
• Respectfully raise concerns and share data‑driven perspectives in group settings to support the best path forward
• Identify and mitigate lower‑risk items (e.g., lead times, part tolerances) by coordinating with standard vendors; escalates larger risks to management

• Bachelor’s degree in engineering field is required
• 4+ years’ experience as controls engineer on electro‑mechanical systems
• Proficiency in Structured Text and Ladder; working knowledge of other IEC 61131‑3 languages
• Ability to apply sound reasoning and judgment on tasks and near‑term project decisions, with review and support from senior engineers
• Working knowledge of control‑related safety systems (ANSI/RIA
  15.06/OSHA compliant) and enclosure design compliant with NFPA
  79/NEC/UL508A standards
• A reliable and persistent work ethic, seeing tasks through to completion and staying determined in the face of uncertainty and failure
• Familiarity with manufacturing equipment and hands‑on fabrication or assembly skills (e.g., rotating machinery, cable winding, soldering, pipe bending, or similar)
• Collaboration experience with job shops and external vendors
• High self‑motivation and drive to execute quickly with strong troubleshooting and problem‑solving skills
• A value for design for manufacturability, serviceability, and simplicity over complexity

• Experience in Beckhoff and Siemens controls platforms
• Experience in Ignition…