RF Systems Engineer
US$150,000 – US$225,000 / yr base salary
Posted 6 Aug 2026
Advertised as “Principal RF Systems Engineer”
BranchFactor Summary
The original posting with the fluff stripped out
- Expected experience
- 15+ yrs
- Management level
- People management
- Employment
- On-Site
- Contract
- Full-time
| Base salary | US$150,000 – US$225,000 / yr |
|---|
Field of studyElectrical Engineering, Physics (or related)
Study levelBachelor's
Study levelMaster's or higher
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:
What you'll do:
- Shape System Architecture: Play a critical role in the end-to-end design and integration strategy for RF plants for tokamaks, collaborating with other senior engineers to ensure seamless interaction between RF sources, matching networks, and the dynamic plasma load
- Guide Solid-State & Electronics Integration: Act as a key driver in the architecture and design of the electronics ecosystems required to integrate massive, distributed RF systems, with a heavy emphasis on solid-state amplifier technology and associated power supplies
- Spearhead Instrumentation & Control (I&C): Take the initiative in designing and integrating advanced RF signal detection, measurement circuits, and embedded digital controllers that interface seamlessly with SPARC’s central data collection systems