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 £70 million 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
Fusion energy technologies, expertise and testbeds for government and private fusion programmes, including ST40, the world’s highest field spherical tokamak.
TE Magnetics
HTS systems for commercial applications including fusion energy, power distribution, life
sciences, and propulsion.
Ridgway Machines
Manufacturing equipment for the superconducting, electrical and wider energy sectors, enabling the rapid industrialisation of HTS products.
Why Join Tokamak Energy?
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Work on world-leading fusion technology
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Be part of a high-impact, globally significant programme
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Collaborate with leading scientists and engineers
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Gain hands-on experience in a live experimental environment
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Contribute to the future of clean, sustainable energy
The Opportunity
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.
What You’ll Be Doing
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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
Current Focus
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.
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.
Requirements
Essential
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Strong experience in electronics design
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Knowledge of signal processing and data acquisition systems
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Experience working in complex or large-scale experimental environments
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PCB design experience using ECAD tools
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Experience working with suppliers and electronic components
Desirable
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Experience with magnetic diagnostic sensors (e.g. Mirnov coils, Rogowski coils)
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Background in fusion, plasma physics, or particle accelerators
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PhD or advanced research experience
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Electrical certifications
The Team
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.
Apply Now - 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.
Benefits
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Competitive salary tailored to your skills and experience (openly discussed from the outset)
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25 days holiday + bank holidays, plus discretionary festive shutdown
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Performance-led rewards including bonus, innovation and merit schemes
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Share options – a stake in our future success
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Pension and comprehensive financial protection package
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Health and wellbeing support, including cash plan and 24/7 assistance
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Ongoing investment in your growth with training and career progression
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Be part of world-changing innovation in fusion energy
Important information for candidates
Pre-employment screening
Please note that the appointment of the successful candidate will be subject to standard pre-employment screening, as applicable to the post. This will include right-to-work, proof of identity and references.
Data privacy
Please note that any personal data submitted to Tokamak Energy as part of the job application process will be processed in accordance with the GDPR and related UK data protection legislation, for more information regarding GDPR please see: https://www.gov.uk/government/publications/guide-to-the-general-data-protection-regulation
Equality of opportunity
Entry into employment with the Tokamak Energy and progression within employment will be determined only by personal merit and the application of criteria which are related to the duties of each post and the relevant salary structure. In all cases, ability to perform the job will be the primary consideration. No applicant or member of staff shall be discriminated against because of age, disability, gender reassignment, marriage or civil partnership, pregnancy or maternity, race, religion or belief, sex, or sexual orientation.
