Senior Instrumentation Engineer - Magnetics Diagnostics

Tokamak Energy is a global leader in fusion energy and high temperature superconducting (HTS) technologies. We work with governments and industry to develop and bring fusion and HTS solutions to market through innovation and strategic partnerships. A major part of this is our end‑to‑end capability in HTS systems, from design to manufacturing.

We are the Magnet Systems Partner for the UK Government's STEP Fusion programme, under a £70million contract running to 2029, working with UK Fusion Energy to deliver HTS magnet systems for the STEP prototype power plant, while also contributing to tokamak systems and plasma integration.

Founded in 2009 as a spin‑out from the UK Atomic Energy Authority, Tokamak Energy is headquartered in Oxfordshire, with subsidiaries in the United States and Japan. Today, we employ over 300 people and have secured more than £280 million in investment.

We operate through three divisions:

Fusion energy technologies, expertise and testbeds for government and private fusion programmes, including ST40, the world’s highest field spherical tokamak.

HTS systems for commercial applications including fusion energy, power distribution, life sciences, and propulsion.

Manufacturing equipment for the superconducting, electrical and wider energy sectors, enabling the rapid industrialisation of HTS products.

• Work on world-leading fusion technology
• Be part of a high-impact, globally significant programme
• Collaborate with leading scientists and engineers
• Gain hands‑on experience in a live experimental environment
• Contribute to the future of clean, sustainable energy

Up to £68,000 (dependent on experience) per annum plus benefits.

We’re looking for a Senior Instrumentation Engineer to take ownership of magnetic diagnostics for the ST40 tokamak—the world’s highest field spherical tokamak.

This is a unique opportunity to work at the forefront of fusion energy, combining hands‑on electronics engineering with real‑world experimental physics in a live tokamak environment.

You’ll play a critical role in ensuring diagnostic systems perform reliably during experimental campaigns, while contributing to the ongoing upgrade and enhancement of ST40.

• Designing and developing electronics for magnetic diagnostics (including ADCs and signal processing systems)
• Maintaining, troubleshooting, and improving diagnostic and data acquisition systems
• Supporting system operation during tokamak experimental runs
• Fault‑finding and resolving issues in high‑performance experimental environments
• Designing PCB layouts using ECAD tools and coordinating manufacture
• Collaborating with suppliers to source and specify electronic components
• Supporting front‑end signal processing systems used in diagnostics
• Working closely with physicists, engineers, and control room teams
• Potentially participating in control room operations during experimental campaigns

Initially, you’ll support a major upgrade of the ST40 tokamak, enhancing its performance and diagnostic capabilities. Following this, you’ll play a key role in live experimental campaigns, supporting cutting‑edge fusion research.

• Strong experience in electronics design
• Knowledge of signal processing and data acquisition systems
• Experience working in complex or large‑scale experimental environments
• PCB design experience using ECAD tools
• Experience working with suppliers and electronic components

• Experience with magnetic diagnostic sensors (e.g. Mirnov coils, Rogowski coils)
• Background in fusion, plasma physics, or particle accelerators
• PhD or advanced research experience
• Electrical certifications

You’ll be part of a specialist diagnostics team, collaborating with physicists, engineers, and control room staff in a highly technical and research‑driven environment.

If you’re looking to apply your electronics expertise in one of the most exciting and cutting‑edge fields in science and engineering, we’d love to hear from you.

• Competitive salary tailored to your skills and experience (openly discussed from the outset)
• 25 days holiday + bank holidays, plus discretionary festive…