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Principal Engineer, Process Safety Management

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Job Description

About Commonwealth Fusion Systems:


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 working with policymakers and suppliers to build the energy industry of the future.


We’re in the best position to make it happen. Since 2018, we’ve raised over $2 billion in capital – more than any other fusion energy company in the U.S.


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.


Our goal is to deploy thousands of fusion power plants (ARCs) around the world. We need a highly motivated and experienced safety and risk engineer to help deliver our first fusion device, SPARC. After SPARC is proven we move forward to multiple iterations of ARC technology for rapid deployment.

We are seeking a Principal Engineer, Process Safety Managementto join our Environmental, Health, Safety, and Security (EHSS) team. Reporting directly to the Director of Project Safety, this role will be the organization’s process safety and risk management expert and will serve as a key advisor to ensure the safe design and operation of novel systems and applications throughout the fusion plant.

Examples of the unique and novel power systems we are currently engineering include:

● A Cryogenic System (CRYO) removes heat from the tokamak to keep the superconducting magnets operating down to 8°Kelvin (-445°F). CRYO consists of a distribution system with multiple tanks and vacuum-jacketed lines interfacing with the fusion reactor to supply cold helium and return warm to the cryoplant. The cryoplant is a 4 MW helium Brayton cycle plant that rejects the heat to the liquid nitrogen (LN2) and cooling water systems.

● A Radio Frequency Heating System (RFHT) serves as the heat source to bring the plasma up to and sustain operating temperatures, utilizing Ion Cyclotron Resonant Heating. The system is built up of a series of transmitters that convert electrical power to Radio Frequency power, a transmission system, and ultimately an antenna system to send the signals into the tokamak.


This role is based primarily in office in Devens MA with availability for hybrid work consideration. Most scope will be in office/ in the SPARC fusion plant. A portion of scope will be available for remote consideration.

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