Principal RF Systems Engineer (Fusion Energy)

Location: Devens, MA. On-site. The role requires occasional travel, nights, weekends, or on-call work and involves working in a facility with heat, cold, noise, fumes, strong magnets, lead, high voltage, high current, pressure systems, and cryogenics.

Salary: $172,000–$260,000 per year, plus equity and benefits.

Company

hirify.global is developing commercially viable fusion power plants and the energy infrastructure required for fusion energy.

What you will do

• Define the end-to-end architecture and integration strategy for tokamak RF plants, including RF sources, matching networks, and dynamic plasma loads.
• Lead the integration of distributed RF electronics, solid-state amplifiers, and associated power supplies.
• Design and integrate RF signal detection, measurement circuits, instrumentation, and embedded digital controllers connected to central data collection systems.
• Design, integrate, and optimize large-diameter coaxial transmission lines and dynamic impedance-matching networks.
• Commission equipment, troubleshoot complex system-level hardware discrepancies, and provide hands-on technical mentorship to junior engineers.

Requirements

• Bachelor’s degree in Electrical Engineering, Physics, or a related field; a Master’s degree or Ph.D. is strongly preferred.
• 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 RF arcs.
• Exceptional RF circuit and electronics design skills using Altium or similar tools for instrumentation, sensing, control, and system integration.
• Experience with EMI/EMC mitigation in high-power, high-noise environments.
• High proficiency with RF/microwave simulation software such as CST or HFSS.
• Systems-level understanding of embedded digital controllers, high-speed communications, and mechanical/thermal design fundamentals.
• Ability to perform stooping, climbing, typing, standing, and sitting for extended periods.
• Willingness to work in the stated industrial-hazard environment and occasionally travel, work nights or weekends, or be on call.

Culture & Benefits

• Mission-driven, fast-paced environment focused on integrity, execution, impact, self-critique, and diverse perspectives.
• Competitive compensation with equity.
• 13 company-wide holidays, flexible vacation days, 10 sick days, and generous parental leave.
• Health, dental, and vision insurance plus a 401(k) with employer matching.
• Professional growth opportunities and team-building activities.