Principal RF Systems Engineer
Commonwealth Fusion Systems · On-site
MeritLog read this listing from Commonwealth Fusion Systems's Lever job board and last checked it on September 10, 2026.
Source: the employer's Lever job board. Open the original listing for current details.
Job details
- Work model
- On-site
- Salary
- $150,000 - $225,000
- Location
- Devens, MA
Hiring context
How this role compares at Commonwealth Fusion Systems
Commonwealth Fusion Systems has 100 live roles in MeritLog’s catalog across 7 job families, and 64 of them are in engineering. 100 of those listings publish a pay range, a disclosure rate of 100%.
This role's posted range of $150,000 - $225,000 sits above 79% of the 66 other Commonwealth Fusion Systems roles quoted over the same currency and period.
Commonwealth Fusion Systems concentrates this hiring in:
Counted across the job boards MeritLog tracks, at the time this page was served. Pay comparisons use only listings that publish a complete range in the same currency and period.
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 Principal RF Systems Engineer SPARC sustains fusion reactions by feeding >25MW of 120MHz RF power into the tokamak to heat the plasma to 100 million Kelvin. We need a Principal RF Systems Engineer to play a pivotal role in building the most powerful RF plant in the world. At this level, you are a highly influential architect of the system. You will help drive the high-level technical direction while remaining deeply hands-on, taking a central role in the integration of high-power electronics, solid-state amplification, and complex transmission networks to ensure SPARC achieves net energy. For more information on the SPARC RF plant, see the SPARC journal papers here: Overview of the SPARC tokamak Physics basis for the ICRF system of the SPARC tokamak