Commonwealth Fusion Systems
Principal RF Systems Engineer
$172K–$260K
Devens, MA · On-site · Principal · Full-time · Posted Aug 6, 2026
- Experience
- 15+ years; relevant fields include high-power RF systems, radar, particle accelerators, or heavy industrial power electronics.
- Education
- Bachelor’s degree in Electrical Engineering, Physics, or a related field; Master’s or Ph.D. strongly preferred.
- Visa sponsorship
- Employment offers are contingent on compliance with U.S. Export Control Laws.
About the job
Architect, integrate, commission, and troubleshoot SPARC’s high-power RF plant, including its amplifiers, electronics, controls, and transmission systems.
What you'll do
- Shape the end-to-end RF plant architecture and integration strategy for tokamak systems.
- Lead integration of solid-state amplifiers, power supplies, instrumentation, embedded controls, and high-power transmission components.
- Commission and troubleshoot system hardware, and mentor junior engineers.
What they ask for
- Bachelor’s degree in Electrical Engineering, Physics, or a related field.
- 15+ years of hands-on experience in high-power RF systems, radar, particle accelerators, or heavy industrial power electronics.
- Hands-on expertise measuring forward and reflected RF power, diagnosing RF arcs, and designing timing and electronics to mitigate arcs.
- Experience in RF/electronics design and EMI/EMC mitigation, plus high proficiency in RF/Microwave simulation software.
Nice to have
- Master’s or Ph.D.
- Experience with Altium or similar, CST, or HFSS.
Pay
USD 172,000–260,000 (per-year-salary); base salary
Tools
Altium, CST, HFSS
Model-written summary · the original posting is authoritative