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.

Join the team helping to define the future of fusion energy and advanced superconducting technologies

At Tokamak Energy, we're tackling some of the world's most complex engineering challenges. We're looking for a Systems Integration Engineer who thrives on bringing structure to complexity, connecting information across teams, and helping turn ambitious engineering concepts into deliverable technology.

This is an opportunity to play a pivotal role on a major programme, working at the intersection of systems engineering, advanced magnet technology, cryogenics, power systems and large-scale engineering integration.

You'll work closely with technical leaders and multidisciplinary engineering teams, helping to define requirements, manage interfaces, build system architectures and ensure critical decisions are made with confidence and clarity. The role has been created because demand for systems engineering expertise is growing and we're looking for someone who can become a key contributor to programme success from day one.

Why this role exists

At Tokamak Energy, we're developing some of the world's most advanced high temperature superconducting (HTS) magnet systems and fusion technologies. As our programmes grow in scale and complexity, we're looking for a Systems Integration Engineer who can help bring structure, clarity and alignment across multiple engineering disciplines.

Working within our Systems & Integration Group, you'll collaborate with technical leads, project managers and subject matter experts across magnet design, cryogenics, electrical systems, controls, integration and external partners. You'll help ensure critical requirements, interfaces and technical decisions are captured, understood and managed effectively.

This role is ideal for someone who enjoys solving complex engineering challenges, bringing order to ambiguity, and working with experts across multiple disciplines to deliver technologies that do not yet exist today.

Why this role is exciting

This is not a role focused on maintaining established products or supporting incremental improvements.

You'll be helping shape novel technologies in a rapidly evolving environment where engineering teams are often tackling challenges for which there is no established solution. Success requires curiosity, strong analytical thinking and an ability to break down complex problems into manageable parts.

Whether your background is in aerospace, advanced automotive, defence R&D, fusion, nuclear, robotics, energy, space or another technically demanding environment, you'll have the opportunity to apply systems engineering principles to genuinely cutting-edge programmes.

What you'll be doing

• Supporting systems engineering activities across major engineering programmes.
• Capturing, managing and maintaining system requirements and ensuring full traceability.
• Developing system architectures, functional breakdown structures and interface definitions.
• Gathering information from multiple technical teams and transforming it into clear, structured engineering outputs that support informed decision-making.
• Working with technical leads and project managers to support programme delivery.
• Coordinating activities across multidisciplinary teams including magnet design, cryogenics, electrical systems, instrumentation and plant integration.
• Supporting technical reviews, readiness reviews and risk management activities.
• Developing verification and validation strategies for complex engineering systems.
• Defining and maintaining critical interfaces between teams, suppliers and external partners.
• Contributing to the continuous improvement of systems engineering processes, tools and methodologies.

Location

This is a permanent position based in Oxfordshire with hybrid working available. Regular onsite collaboration is expected, typically around three days per week across programme locations, depending on project needs.

Requirements

Essential Experience

• Degree qualified in Systems Engineering, Mechanical Engineering, Electrical Engineering, Physics or a related discipline, or equivalent industry experience.
• Proven experience applying systems engineering principles within complex engineering environments.
• Experience developing and managing requirements, architectures, interfaces and verification activities.
• Experience working in technically complex, multidisciplinary engineering environments where requirements evolve and engineering challenges are often novel.
• Strong analytical and problem-solving skills with the ability to break complex problems into manageable parts.
• Excellent stakeholder engagement and communication skills.
• Ability to gather, analyse and synthesise information from multiple technical sources.
• Comfortable working with ambiguity and able to bring structure, clarity and traceability to evolving engineering challenges.

What We're Looking For

We're less concerned with experience in a specific industry and more interested in individuals who can think critically, connect information across multiple disciplines and help drive informed engineering decisions.

You may currently work in aerospace, advanced automotive, defence, robotics, nuclear, energy, space or another highly technical sector. What matters most is your ability to understand complex systems, manage interfaces, navigate uncertainty and work effectively with diverse engineering teams.

If you're excited by solving challenging technical problems and helping deliver world-changing technology, we'd love to hear from you.

Benefits

• Salary guide up to £65,000 per annum dependent on experience
• 25 days holiday + bank holidays, plus discretionary festive shutdown
• Performance-led rewards including discretionary bonus, innovation and merit schemes
• Share options – a stake in our future success
• Pension and comprehensive financial protection package including death in service and critical illness cover
• Health and wellbeing support, including cash plan and 24/7 assistance
• Ongoing investment in your growth with training and career progression
• Be part of world-changing innovation in Fusion Energy

Important information for candidates

No terminology in the advert or job description is intended to discriminate on the grounds of a person’s age, disability, gender reassignment, marriage or civil partnership, pregnancy or maternity, race, religion or belief, sex, or sexual orientation. Every candidate will be assessed only in accordance with their merits, qualifications and abilities to perform the duties of the job.

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.