Intern - Mechanical Equipment Engineer - Spring 2027

Commonwealth Fusion Systems LLC; Harvard (MA); On-site; USD 34,000 - 52,000; Full time

Benefits offered by this job

Sick time policy

Health, dental and vision insurance

401(k) with employer matching

Professional growth opportunities

Team-building activities

Job summary

Commonwealth Fusion Systems in Devens, MA offers a 26-week Mechanical Equipment Engineering Internship. You will design and model equipment, support manufacturing, and collaborate with the assembly and tear-down teams.

We look for students pursuing Mechanical Engineering with NX CAD experience. The role requires on-site presence, willingness to travel and work nights/weekends occasionally, and ensuring safety on the production floor.

Qualifications

• Enrolled in an engineering degree with focus in Mechanical Engineering.
• Experience with CAD modeling, NX preferred.

Responsibilities

• CAD modeling and drawings in NX
• Design and support manufacturing equipment (lifting fixtures, weld fixtures, etc.)
• Work with the equipment and manufacturing teams on the assembly and tear down of equipment
• Identify and implement process improvements to the production floor

Skills

CAD modeling

Education

Mechanical Engineering degree pursuit

Tools

NX

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 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.

Join the power movement as a Mechanical Equipment Engineering Intern

We are looking for a talented Mechanical Equipment Engineering Intern to join our team! CFS interns are highly valued within the organization and placed into meaningful and challenging roles.

Program Details:

• 26 week internship
• 40-50 hours per week with set hourly salary based on year in school
• Opportunity on site in Devens, MA. If an intern is going to be on site, you will be responsible for your own transportation and housing
• Specific project assignments and required technical skillset will vary based on the team’s existing need.
• Opportunities available for currently enrolled college students in all levels of schooling from bachelor’s degree to PhD
• Interns must be authorized to work in the United States for any employer

What you'll do:

• CAD modeling and drawings in NX
• Design and support manufacturing equipment (lifting fixtures, weld fixtures, etc.)
• Work with the equipment and manufacturing teams on the assembly and tear down of equipment
• Identify and implement process improvements to the production floor

What we’re looking for:

• Pursuing an engineering degree with focus in Mechanical Engineering
• CAD modeling experience (NX preferred)

Must-have Requirements:

• Willingness to travel or work required nights/weekends/on-call occasionally
• 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

Pay:

$25 - $38 an hour

Rates are aligned to your current year in school, ensuring equitable and consistent pay across our intern program.

For BS interns, the hourly rate is $25–$32

For MS/PhD interns, the rate is $35–$38

Benefits included for full-time interns:

• 40 hours of sick time
• Health, dental, and vision insurance
• 401(k) with employer matching (must be 21 years of age to enroll)
• Professional growth opportunities
• Team-building activities

#LI-Onsite

Company culture

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.

Equal opportunity statement

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.

Export Control Laws compliance

This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, “Export Control Laws