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Salary
$50k – $76k per year
Location
In office (Devens)
Seniority
Intern
Employment
Internship

Confirmed on the employer's own hiring board on Nov 3, 2026. First seen by Alion on Oct 26, 2026. Commonwealth Fusion Systems scores A on the Alion truth index.

Overview
Company
Impact
Profile match
Commonwealth Fusion Systems is a commercial fusion energy company headquartered in Devens, Massachusetts, and founded in 2018. The firm specializes in the development of high-temperature superconducting magnets and compact tokamak devices, specifically the SPARC net-energy machine and the ARC commercial power plant. It operates through a strategic partnership with the Massachusetts Institute of Technology and focuses on scaling fusion technology to provide carbon-free, baseload power to global energy markets.

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
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