Senior RF Systems Engineer - High-Power Fusion Tech

Cfsenergy; Harvard (MA); On-site; USD 180,000 - 280,000; Full time

Job summary

Commonwealth Fusion Systems seeks a Principal RF Systems Engineer to architect and deliver the SPARC RF plant, integrating high‑power electronics, solid‑state amplification, and complex transmission networks. You will drive high-level technical direction while remaining hands‑on, mentoring engineers and leading system integration efforts.

The role emphasizes hands‑on design, testing, and integration across RF sources, matching networks, and plasma load, with a strong focus on EMI/EMC mitigation

Qualifications

• Bachelor's degree in Electrical Engineering or related field.
• 15+ years hands-on experience in high-power RF systems, radar, accelerators, or heavy industrial power electronics.
• Strong track record in high-power RF design, integration and testing.
• Experience with EMI/EMC mitigation in extreme high-power, noisy environments.
• Hands-on commissioning, troubleshooting and mentorship of engineers.

Responsibilities

• Shape end-to-end RF plant architecture for SPARC and biomass systems.
• Lead integration of high-power RF sources, transmission networks, and power supplies.
• Mentor senior engineers and drive on-floor technical excellence.
• Commission and troubleshoot equipment, optimize system performance.
• Collaborate with cross-functional teams to ensure robust system design.

Skills

RF systems

High-power RF

Solid-state amplification

Instrumentation & control

EMI/EMC mitigation

RF engineering design

Embedded digital controllers

CST/HFSS simulation

Altium design

Cross-functional leadership

Education

Bachelor's degree in Electrical Engineering or related

Tools

Altium

CST

HFSS

Job description

Commonwealth Fusion Systems seeks a Principal RF Systems Engineer to architect and deliver the SPARC RF plant, integrating high‑power electronics, solid‑state amplification, and complex transmission networks. You will drive high-level technical direction while remaining hands‑on, mentoring engineers and leading system integration efforts.

The role emphasizes hands‑on design, testing, and integration across RF sources, matching networks, and plasma load, with a strong focus on EMI/EMC mitigation