Senior RF Electronics Engineer

Devens, MA
SPARC Team – Electrical Systems /
Full-time /
Commonwealth Fusion Systems (CFS) has the fastest, lowest cost path to commercial fusion energy.

CFS collaborates with MIT to leverage decades of research combined with groundbreaking new high-temperature superconducting (HTS) magnet technology. HTS magnets will enable compact fusion power plants that can be constructed faster and at lower cost. Our mission is to deploy these power plants to meet global decarbonization goals as fast as possible. To that end, CFS has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by the world’s leading investors, CFS is uniquely positioned to deliver limitless, clean, fusion power to combat climate change. To implement this plan, we are looking to add dedicated people to the team who treat people well, improve our work by adding multifaceted perspectives and new ways of solving problems, have achieved outstanding results through a range of pursuits, and have skills and experience related to this role.

SPARC sustains fusion reactions by feeding >25MW of 120MHz RF power into the tokamak to heat the plasma to 100 million Kelvin. We need an outstanding RF engineer to build the most powerful RF plant in the world.

Your responsibilities will include integration, test, and troubleshooting of all elements of the SPARC RF system. The ideal candidate will have 10+ years hands-on experience in high-power RF system design, integration, and test. Responsibilities for this position can scale with the candidate.

For more information on the SPARC RF plant, see the SPARC journal papers here:

SPARC Overview:

Ion Cyclotron RF Heating Physics Basis: 

This team member will:

    • Integrate, test, and commissioning of RF system components – RF sources, amplifiers, transmission lines, antennas, splitters/combiners, power supplies
    • Manage engineers and technicians, and timely project delivery
    • Develop manufacturing and commissioning processes specific to RF components
    • Troubleshoot and resolve manufacturing discrepancies with a focus on continuous improvement
    • Design and integration of RF signal detection and measurement circuits that will interface with the control and data collection system of SPARC

The ideal candidate will have most, if not all, of these requirements:

    • Bachelor’s degree in Electrical Engineering
    • 10+ years hands-on experience in RF system design, integration, and/or test
    • 2+ years of supervisory management experience
    • Modern high-performance embedded digital controllers
    • Familiarity with test scripting programs like Python
    • Altium or similar electrical design
    • RF/Microwave simulation software: CST, HFSS e.g.

Additional preferred experience and/or qualifications:

    • RF circuit electrical design
    • Circuit layout design using programs like Altium
    • Perform activities such as stooping, climbing, typing, standing, or sitting for extended periods of time
    • Willingness to travel or work required nights/weekends/on-call occasionally
    • Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics
    • #LI-Onsite
CFS team members thrive in a fast-paced, dynamic environment and have demonstrated exceptional results through a range of different pursuits. We all tightly align with our company values of integrity, execution, impact and self-critique. As we grow, we are looking to add talented people who are mission driven and bring diverse perspectives and new ways of solving problems.

At CFS, we deeply value diversity and are an equal opportunity employer by choice. We consider all qualified applicants equally for employment. We do not discriminate on the basis 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, ordinance, or regulation.