Senior Mechanical Engineer (m/w/d)

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 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 Senior Mechanical Engineer - TF Structures

As a Mechanical Engineer for the SPARC Toroidal Field (TF) Coil System Structures team, you will be a product owner responsible for the design, production support, and assembly of structural components and insulation in our HTS magnet systems. You will work closely with our Production, Assembly, and Procurement teams to ensure components meet requirements and are delivered on-time. Your responsibilities will also include the development design and analysis documentation, technical specifications, and assembly procedures.

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.

What you'll do

• Perform structural and thermal calculations, ranging in complexity from first principle hand calculations to FEA
• Drive production drawing releases and revisions to meet manufacturing and assembly schedules
• Collaborate with internal Quality, Manufacturing, Assembly, Commissioning, and Procurement teams on requirements and documentation
• Rapidly design, test, and qualify prototypes
• Prepare reports and presentations as requested
• Be self-motivated and exhibit excellent problem-solving skills
• Strive for simplicity over complexity

What we’re looking for

• Bachelor’s degree in mechanical engineering, aerospace engineering, physics, or another relevant field
• 8+ years of experience designing structural components in a fast-pace environment
• Experience with CAD software (NX preferred) and analysis software (ANSYS Workbench preferred)

Essential Requirements

• Perform activities such as typing, standing, or sitting for extended periods of time
• Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics
• Willingness to occasionally travel or work required nights/weekends/on-call

$110,000 - $185,000 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
• 12.5 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.