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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 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 nearly $3 billion in capital, making us the largest and leading private 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.

Join the power movement as a R&D Engineer

The NINT Magnet R&D team is responsible for testing and retiring risks for CFS's NINT (non-insulated-non-twisted) HTS magnets. This includes executing development test campaigns for CFS's next-generation NINT magnet technology, and leading RCCA efforts through analysis and testing to resolve issues that may arise with the SPARC NINT magnets currently in production, tokamak integration, and commissioning. HTS magnet technology is inherently multidisciplinary, and a successful R&D engineer will seamlessly flex between disciplines and groups to effectively execute tests and projects on aggressive schedules supporting CFS's mission. The R&D engineer must have a fundamental understanding of mechanical, electrical, materials, fluids, and systems engineering, or some combination thereof. It is also the role of the R&D engineer to constantly push and challenge the requirements, risks, and test objectives that they are given to help the combined stakeholders come to a consensus on why the planned test is required and what data is deemed essential for the outcome to be achieved.

What you'll do

• Develop new HTS magnet designs and their associated subsystems, which includes the designing and building R&D test samples, and developing their manufacturing processes and test operations
• Design, build, and commission test equipment required to accomplish R&D test campaign objectives
• Perform structural, electrical, and/or thermal analyses in support of R&D sample design and to predict test results
• Build expertise in testing HTS magnets as well as how to design and build R&D HTS magnets and their associated subsystems, including power delivery, cryogenic cooling, and structures
• Support the production, integration, and commissioning of SPARC NINT coils as issues requiring HTS magnet build and test expertise arise
• Understand, challenge, and maintain well documented requirements and risks for the system or component under test, and align stakeholders on why the planned test is required and what data is deemed essential for the desired outcome to be achieved
• Collaborate with I&C engineers to develop necessary instrumentation and data acquisition systems
• Maintain documentation, schedules, and budgets for test campaigns. Documentation includes: design reviews, wiring lists, P&IDs, schematics, CAD assemblies, drawings, BOMs, data acquisition systems, and operations software
• Develop custom tools to analyze generated data. Compile test results in presentations for review
• Prepare and deliver presentations containing trade studies, design reviews, test readiness reviews, and test data reviews to teams of engineers and physicists

What we're looking for

• Bachelor's degree in engineering or science field is required; mechanical engineering, electrical engineering or similar, or applied physics degree preferred
• 3+ years' experience as an R&D engineer or test engineer designing, building, commissioning complex electromechanical systems
• Experience with selecting and utilizing instrumentation and control components such as thermocouples, voltage and current sensors, oscilloscopes, pressure transducers, strain gauges, heaters, flow meters, fittings and valves
• Experience with developing and executing test procedures
• Proficiency with CAD design in Siemens NX or equivalent CAD software
• Familiarity with electromagnetic fundamentals - voltage, current, resistance, Ohm's law, AC/DC, right-hand rule, solenoids, etc
• Excellent troubleshooting / problem-solving skills with great attention to detail
• Experience developing and effectively presenting comprehensive trade studies comparing the pros & cons of various technical approaches
• Data reduction and analysis skills that can be used in generating anticipated results and processing generated data
• Effective at communicating technical topics to both technical and non-technical audiences
• High self-motivation and drive to execute quickly
• Collaboration skills including active listening and facilitating production discourse on problems
• Willingness to challenge the status quo in search of better, more efficient methods

Bonus points for

• Experience with modeling/analysis software, especially ANSYS, COMSOL, and PLECS
• Experience writing Python or MATLAB data tools for processing and analyzing data
• Experience with high voltage and high current power equipment design and use - power supplies, water-cooled cables, insulation
• Experience debugging electronics hardware and test software
• Experience with designing and commissioning new test facilities
• Experience designing fluid systems - P&IDs, component selection, ASME design codes
• Experience with cryogenic equipment design for use with liquid nitrogen and supercritical helium - vacuum jacketed equipment, cryocoolers, phase separators, cold traps
• Experience with high vacuum equipment design and use - roughing pumps, turbopumps, ion gauges, residual gas analyzers
• Experience developing or improving manufacturing processes and handing off processes to production teams

Must-have requirements

• Ability to occasionally lift up to 50 lbs
• Perform activities such as typing, climbing, standing, stooping or sitting for extended periods of time
• Willingness to occasionally travel or work required nights/weekends/on-call
• Work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics

$90,000 - $145,000 a year

Salary range for this full-time position + equity + benefits. The actual salary will depend on level, location, qualifications, and experience. The range displayed on each job posting reflects new hire salaries for the position across all US locations.

Benefits include:

• Competitive compensation with equity
• 13 Company-wide Holidays
• Flexible vacation days
• 10 sick days
• Generous parental leave policy
• Health, dental, and vision insurance
• 401(k) with employer matching
• Professional growth opportunities
• Team-building activities

At CFS, we excel in fast-paced environments, driven by our values of integrity, execution, impact, and self-critique. As we grow, we're eager to bring on mission-driven folks who offer diverse perspectives and fresh ways to tackle challenges.

We value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally, regardless of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law.

This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, "Export Control Laws"). Any offer of employment will be contingent on the need for compliance with such Export Control Laws.