Intern - Electrical/Electromechanical Engineer - Spring 2027

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

Benefits offered by this job

40 hours sick time

Health, dental, and vision insurance

401(k) with employer matching

Professional growth opportunities

Team-building activities

Job summary

Commonwealth Fusion Systems LLC in Devens, MA offers Electrical or Electromechanical Engineering Internships for 17–26 weeks. Interns work 40–50 hours per week with set hourly pay based on year in school. Onsite assignments require housing and transport considerations.

Projects vary by team and require enrollment in college, from bachelor’s to PhD. Authorized to work in the United States is required for internship eligibility.

Qualifications

• Pursuing a degree in Electrical Engineering, Mechanical Engineering, Electromechanical Engineering, or Power Electronics.
• Hands-on experience with hand tools, power tools or test equipment.
• Basic electrical knowledge and CAD experience (NX or SolidWorks).
• Experience with lab instruments like oscilloscopes, spectrum/ network analyzers.
• Familiarity with RF, microwave, or antenna coursework or amateur radio.
• Proficiency in Python for test automation and data analysis.
• Experience with schematic capture, PCB layout, or SPICE.
• Co-op or internship experience in power electronics, test engineering, or hardware development.

Responsibilities

• Test and debug electronics and RF hardware on the bench.
• Analyze test data in Python.
• Install and commission plant hardware.
• Create test plans for validation and commissioning of electrical equipment.
• Test result collection and analysis.
• Electrical drawing review and redline.
• Technical analysis of electrical design projects and specs.
• Mechanical electrical cabinets build, installation, and electrical technician support vendor and field work.
• Electromechanical System Documentation, generate assembly instructions, test procedures.
• Assist setup and running of bench top tests.
• CAD 3D modeling.

Skills

Hands-on tools

Electrical CAD

Python for data analysis

Lab instruments

RF/microwave coursework

Soldering & wiring

Schematic capture/PCB

Power electronics exposure

Education

Electrical Engineering

Mechanical Engineering

Electromechanical Engineering

Power Electronics

Tools

NX CAD

SolidWorks

PCB layout tools

SPICE simulation

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.

Join the power movement as an Electrical or Electromechanical Engineering Intern

We are looking for talented Electrical or Electromechanical Engineering Interns to join our team! CFS interns are highly valued within the organization and placed into meaningful and challenging roles.

Program Details

• 17-26 week internship
• 40-50 hours per week with set hourly salary based on year in school
• Opportunities 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

• Test and debug electronics and RF hardware on the bench
• Analyze test data in Python
• Install and commission plant hardware
• Create test plans for the validation and commissioning of electrical equipment
• Test result collection & analysis
• Electrical drawing review and redline
• Technical analysis of electrical design projects and specification creation
• Mechanical electrical cabinets build, installation, and electrical technician support vendor and field work
• Electromechanical System Documentation, generate assembly instructions, test procedures
• Aid the setup and running of bench top tests
• CAD 3D modeling

What we’re looking for

• Pursuing a degree in Electrical Engineering, Mechanical Engineering, Electromechanical Engineering, or Power Electronics
• Hands‑on experience with hand tools, power tools, or test equipment
• Basic electrical knowledge and experience with 2D and 3D CAD software (e.g., NX, SolidWorks)
• Participation in hands‑on student design teams
• Experience with lab instruments such as oscilloscopes, spectrum/network analyzers, signal generators, and bench power supplies
• RF, microwave, or antenna coursework, or amateur radio experience
• Proficiency in Python for test automation and data analysis
• Experience with schematic capture, PCB layout, or SPICE simulation
• Skills in soldering, cable assembly, or panel wiring (e.g., from Formula SAE, rocketry, solar car, or similar design teams)
• Prior co‑op or internship experience in power electronics, test engineering, or hardware development

Must-have 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

$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

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.