Senior Power Electronics Engineer - Advanced Power Conversion (SuperDC)

TE Magnetics is the high temperature superconducing (HTS) technology division of Tokamak Energy. Born from our mission to deliver fusion energy, we have developed world-leading HTS technology, protected by more than 250 patents and supported by exceptional scientific, engineering, and commercial expertise.

HTS is a transformative technology for a wide range of industries, enabling magnet and power distribution systems that are more powerful, lighter, compact, and highly efficient—transforming industries, creating new opportunities, and accelerating innovation.

TE Magnetics, which is already generating multi-million-pound revenues, is developing robust, high-quality HTS solutions across fast-growing markets including fusion, power systems, analytical science, propulsion, and defence. 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.

Work on power systems that don’t yet exist

AtTokamak Energy, we’re redefining how power is generated, controlled, and delivered usinghigh-temperature superconducting (HTS) technology.

Within ourTE Magnetics division, we’re moving beyond traditional high-voltage approaches—developingultra-high current, low-voltage power architectures that are lighter, more efficient, and fundamentally different from anything in today’s power systems.

We’re now hiring aSenior Power Electronics Engineer to play a key role in ourSuperDC programme—a first-of-a-kind initiative focused on next-generation power conversion.

This is a hands-on, technically deep role for someone who wants toown a problem end-to-end and turn bold ideas into working hardware.

What you’ll be doing

• Take ownership ofpower conversion subsystems from concept through to demonstrator
• Design and developadvanced power electronics systems (DC-DC converters, multi-stage architectures, gate drive systems)
• Build and runhigh-power experimental test programmes
• Applyfirst-principles engineering to solve novel challenges
• Collaborate acrossHTS, systems, controls, and mechanical engineering teams
• Translate experimental learnings intorobust, real-world solutions

Why this role is different

• Work onfirst-of-a-kind systems, not incremental improvements
• Own acritical subsystem, not just a small part of a large team
• Operate in ahigh-autonomy environment where engineers drive decisions
• Help shape the future offusion and next-generation power systems

• Strong experience inpower electronics design, development, and testing

• Expertise inpower conversion (e.g. converters, PSU design, control, switching technologies)
• Proven ability towork independently and own technical delivery
• Background inindustrial or high-power environments (not purely academic)
• Comfortable operating in afast-paced, experimental setting
• Strong communication skills, with the ability to work acrossdisciplines and stakeholders

We’re especially interested in experience across:
DC-DC converters | multi-stage converters | gate drive systems | high-power testing | SiC/GaN technologies | converter topologies

• Please note this role does offer hybrid working, our model sets out a minimum 60% onsite / 40% home working split. Part time working or job share options will be reviewed on an individual basis.
• 25 days holiday (plus bank holidays and discretionary 3 festive days to be used between Christmas and the New Year)
• Company pension scheme
• Eligible for company share option scheme
• Company bonus scheme, discretionary, dependant on performance
• A range of financial benefits including death in service and critical illness cover
• Cycle to work scheme

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.