High Power RF Engineer

Number of employees

220

Abingdon, United Kingdom

Posted on: 2025-12-22

Category: renewables

Apply now

Please let Tokamak Energy know you found this job on Work in Green. This will help us grow!

Employment type:

Full time

Experience required:

Intermediate

Salary

Salary not provided

About the company:

The world needs a clean and reliable source of base-load energy to develop sustainably into the future. That’s what Tokamak Energy is striving to achieve.

Tokamak Energy is a private company accelerating the development of fusion power.

Fusion – the energy source that powers the sun – is globally accepted as the best way to generate plentiful, safe, secure and clean energy. The tokamak is the most heavily researched and best understood of all the different paths to fusion.

It is now acknowledged that the spherical tokamak design offers the smallest and most cost-effective solution. This is our solution. Yet there are many complex engineering challenges that need to be overcome for demonstration and commercialisation of this technology.

Our team of world-class fusion scientists and magnet engineers is tackling these challenges to develop efficient and affordable fusion power. Our unique approach is centred on rapid innovation using the latest materials and technology – but building on decades of scientific research and experience. This strategy gives us – and the world – a faster way to fusion.

Once fusion electricity is achieved, our scalable technology could be rolled out across the world as a solution to one of humanity’s greatest challenges: clean and sustainable energy for all.

Working arrangements

Please note this role does offer hybrid working, our model sets out a minimum 60% onsite / 40% home working split

Overview

We’re recruiting a new team member for our Plasma Heating & Current Drive (H&CD) team. We’re open to both graduate and experienced candidates, and to backgrounds spanning high-power RF and particle-beam/accelerator systems.

You will be a strong team player, working with fellow engineers and physicists on system integration and hands-on delivery of our RF heating plant (80-170Ghz), particularly gyrotrons and RF transmission line. You will also have the opportunity to contribute to our Neutral Beam Injectors (NBI) and related beamline subsystems.

Our focus is the modelling, development, commissioning, operation and upgrade of cutting-edge plasma heating systems, targeting multi-MW capability for future fusion devices. This is an exciting opportunity to participate in a world leading development of fusion energy. 

Requirements

Responsibilities

This role can be highly varied and may consist of any of the following:

Gyrotron / Transmission line integration

  • Deliver system integration activities for RF plant: physical installation, interfaces, alignment, assembly, and test.
  • Lead or support waveguide installation & commissioning (including conditioning, leak checks, inspections, acceptance tests and performance verification).
  • Troubleshoot, repair and maintain high-power microwave components and subsystems (e.g., waveguide, quasi-optics, vacuum windows, mode converters, launchers, arc/flashover protection, cooling).

Commissioning, operations and reliability

  • Support commissioning and operational readiness: procedures, checklists, interlocks proving, fault response, spares strategy, and preventive maintenance.
  • Work with Controls, Vacuum, Electrical, Design and other operational teams to optimise performance and respond to experimental needs.
  • Contribute to NBI and beamline activities: installation support, commissioning, fault finding, and interface management Therefore, we also welcome experience from other accelerator / beam systems

Engineering quality & supplier interface

  • Produce and maintain engineering documentation (requirements, test plans, risk assessments, method statements, operating procedures, maintenance plans).
  • Prepare specifications and scopes of work for equipment procurement and installation contracts.
  • Liaise with manufacturers, contractors and collaborators throughout the hardware lifecycle

Safety

  • Maintain safe systems of work for your equipment and activities, contributing to strong operational discipline and continuous improvement.

Requirements

We’re looking for practical, curious engineers/physicists who enjoy real hardware and interdisciplinary integration, who can demonstrate capability in a combination of:

  • Commissioning / installation / operation / maintenance of complex technical systems
  • Comfort in multi-discipline interfaces (mechanical installation, vacuum, cooling, controls, HV/LV, safety)
  • Strong documentation habits and clear communication - able to work effectively with technicians, engineers, physicists, suppliers and operations teams.
  • A safety-first mindset: ability to follow and improve safe systems of work.
  • Degree (or equivalent experience) in engineering, engineering physics, applied physics, or a related discipline.

High value will be placed on:

  • Good knowledge of high-power RF technology: RF power sources, transmission lines, launching antennas, ancillary subsystems, RF related hazards and protection
  • Practical experience in operation and maintenance of high-power (above 100 kW) RF equipment: commissioning, troubleshooting, control and interlocks
  • Particle beam / accelerator systems (ion sources, HV/LV pulsed power, beam transport, diagnostics, vacuum beamlines)
  • Familiarity with relevant design software and engineering tools
  • Qualifications in high-power RF Electronics or similar.

Role level and salary will be dependent on skills and experience; we will consider a graduate or a more experienced hire for the right candidate.

Benefits

  • Salary dependent on skills and experience and will be discussed from the outset
  • 25 days holiday plus bank holidays
  • Discretionary 3-day festive break depending on business needs
  • Eligible for discretionary performance related bonus
  • Share options scheme
  • Pension scheme
  • Financial benefits – including; group life insurance, critical illness, health cash plan and discount scheme 
  • Innovation and Merit bonuses
  • Investment in training and development to support career progression
  • Opportunity to work on and contribute to world class innovation

Company background

What if there was a limitless, safe, clean, low-cost energy source, providing much needed global energy security?  What if that energy source could also help address climate change?  The answer is fusion energy – the power of the stars. Tokamak Energy is a leading global commercial fusion energy company based near Oxford with have an unrivalled track record designing and operating spherical tokamaks; the optimal route to commercial fusion.

In addition to fusion, Tokamak Energy is recognised as a world leader in transformative High Temperature Superconducting (HTS) magnet technology. Our dedicated HTS magnet team, in collaboration with key manufacturing partners, is focussed on enabling new levels of performance and becoming the leading supplier of HTS magnets to multiple markets, including renewable energy, medicine, science and propulsion in water, land, air and space. 

The company, founded in 2009 as a spin-off from UK Atomic Energy Authority, currently employs a growing team of over 260 people with experts from the UK and around the world.  It combines world leading scientific, engineering, industrial and commercial capabilities.  The company has more than 75 families of patent applications and has raised $335 million, comprising $275m from private investors and $60m from the UK and U.S. governments.  Our U.S. subsidiary, Tokamak Energy Inc, was established in 2019.

Come and be a part of a dynamic and innovative team striving to provide a solution to one of humanity’s greatest challenges: clean and sustainable fusion energy for all.

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.

We’re committed to building an inclusive and accessible recruitment experience.

If you have a disability or require any reasonable adjustments to support you through the application or interview process, please let us know. We’re happy to make the necessary arrangements to ensure you can perform at your best.

Similar climate jobs

These are some of our top picks for great climate jobs on Work in Green.

View all jobs
Fourier logo
USA
Number of employees

35

Dollar sign

$100,000.00 - $135,000.00

Full time
Renewables
Tokamak Energy logo
United Kingdom
Form Energy logo
USA
Number of employees

840

Dollar sign

$147,959.00 - $184,966.00

Full time
Renewables

255 Renewables jobs at Tokamak Energy

Tokamak Energy is hiring High Power RF Engineer,Technical Engineering Programme Manager,Electrical Authorising Engineer, and more.

View all jobs at Tokamak Energy
Tokamak Energy logo
United Kingdom
Tokamak Energy logo
United Kingdom
Tokamak Energy logo
United Kingdom
Tokamak Energy logo
United Kingdom
Tokamak Energy logo
United Kingdom
Tokamak Energy logo
United Kingdom
Number of employees

220

Full time
Renewables