Renewable energy jobs · Nuclear Fusion

Nuclear Fusion Jobs in Renewable Energy

Nuclear fusion professionals design, build, and operate the reactors, magnets, plasma systems, and fuel cycles that aim to replicate the process powering the sun - confining hydrogen isotopes at temperatures exceeding 100 million degrees to produce net energy. The private fusion sector employed 4,607 people directly in 2025, with at least 9,300 additional jobs in the supply chain, according to the Fusion Industry Association's annual report. That direct workforce has quadrupled since 2021.

Who hires for fusion roles

Three companies dominate fusion hiring on Rejobs. Commonwealth Fusion Systems (CFS), based in Devens, Massachusetts, employs over 1,000 people and is building SPARC, a compact high-temperature superconducting tokamak designed to demonstrate net energy. Helion Energy in Everett, Washington, takes a different approach - using pulsed field-reversed configuration to compress plasma directly, bypassing the tokamak design entirely. Helion raised $425 million in its Series F round in early 2025. Thea Energy in Kearny, New Jersey, is developing an optimised stellarator, a reactor type that avoids the plasma instabilities inherent in tokamaks.

Beyond private companies, the ITER project in southern France - the world's largest fusion experiment - employs thousands of contractors across Europe and continues tokamak assembly, with research operations targeted for 2034.

What the roles look like

The most common fusion jobs are mechanical engineers, electrical engineers, and power electronics engineers - roles that would be recognisable in any heavy engineering context but require specific knowledge of superconducting magnets, cryogenics, or plasma-facing materials. Production technicians and welders make up a substantial share of open positions, reflecting the fact that fusion is firmly in the hardware-building phase. More specialised roles include fuel cycle operations leads, nuclear diagnostics engineers, plasma physicists, and magnet engineers working with high-temperature superconductors.

Virtually all current fusion jobs are located in the United States, concentrated around Everett and Devens in Massachusetts (CFS), Everett, Washington (Helion), and Kearny, New Jersey (Thea Energy).

Funding and growth trajectory

The fusion industry raised $2.64 billion in private and public funding in the year to July 2025 - a 178% increase over the previous year. Cumulative investment across 53 tracked companies now stands at $9.77 billion. Public funding grew 84% year-on-year to nearly $800 million. The median company estimates it needs $700 million in additional capital to reach pilot-plant stage, which gives a sense of the scale of investment still required.

53% of fusion companies project commercial deployment by 2035, and 84% expect to deliver electricity to the grid by 2039. If those timelines hold, the Fusion Industry Association projects 18,200 direct employees once pilot plants become fully operational.

Skills that command a premium

Fusion sits at the intersection of nuclear engineering, plasma physics, power electronics, and materials engineering - and candidates who bridge two or more of these fields are scarce. Experience with superconducting magnet systems, tritium handling, or high-vacuum environments is particularly valued. The sector also needs supply chain managers, health physicists, and control systems engineers who understand nuclear regulatory frameworks. As companies transition from R&D to manufacturing, demand for fabrication and welding specialists with nuclear-grade quality standards is growing fast.