Intern - Microwave Engineer - Summer 2027

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

Benefits offered by this job

Sick time (40 hours) taken as needed

Health, dental, and vision insurance

401(k) with employer matching

Professional growth opportunities

Team-building activities

Job summary

Commonwealth Fusion Systems LLC seeks a Microwave Engineering Intern to join our Devens, MA team for 13–18 weeks of hands-on experience with millimeter-wave diagnostics and RF/optical components. Interns are placed in meaningful projects and gain real-world EM exposure.

We welcome enrolled students from bachelor to PhD levels. The program runs 13–18 weeks, 40–50 hours/week, on-site in the United States with salary aligned to year in school.

Qualifications

• Pursuing an engineering degree with focus in the field of Electrical Engineering, Engineering Physics, Applied Physics, Optical Engineering or Photonics Engineering
• Classwork (or a demonstrated interest) in electromagnetics, optics, or antennas
• Experience in an RF, microwave, millimeter-wave or optics lab
• Software experience with electromagnetic calculations (e.g. Ansys Electronics Desktop, Comsol, finite elements methods), matlab, CAD modeling
• Demonstration of exceptional results through a range of different pursuits
• High self-motivation and drive to execute quickly with excellent troubleshooting/problem-solving skills

Responsibilities

• Working with the millimeter wave diagnostic systems, including edge-scanning reflectometry and electron cyclotron emission
• Building, testing and/or data analysis of passive RF components and optical assemblies, such as: rectangular waveguide, circular waveguide, frequency-dependent couplers, antennas, optical mirrors and polarizers
• Electromagnetic calculations of transmission, reflection, and loss

Education

Electrical Engineering

Optical Engineering

Photonic Engineering

Tools

Ansys Electronics Desktop

Comsol

Finite elements methods

MATLAB

CAD modeling

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 Microwave Engineering Intern

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

Program Details:

• 13-18 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:

• Working with the millimeter wave diagnostic systems, including edge-scanning reflectometry and electron cyclotron emission
• Building, testing and/or data analysis of passive RF components and optical assemblies, such as: rectangular waveguide, circular waveguide, frequency-dependent couplers, antennas, optical mirrors and polarizers
• Electromagnetic calculations of transmission, reflection, and loss

What we’re looking for:

• Pursuing an engineering degree with focus in the field of Electrical Engineering, Engineering Physics, Applied Physics, Optical Engineering or Photonics Engineering
• Classwork (or a demonstrated interest) in electromagnetics, optics, or antennas
• Experience in an RF, microwave, millimeter-wave or optics lab
• Software experience with electromagnetic calculations (e.g. Ansys Electronics Desktop, Comsol, finite elements methods), matlab, CAD modeling
• Demonstration of exceptional results through a range of different pursuits
• High self-motivation and drive to execute quickly with excellent troubleshooting/problem-solving skills

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

#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.

25 - 38 USD

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