Principal Mechanical Engineer

Millbank Holdings • Risley, Warrington, Cheshire, United Kingdom • Posted June 08, 2026

Location Risley, Warrington, Cheshire
Job Type Full-time
Category architecture-and-engineering
Posted June 08, 2026
Do you have hands-on experience delivering mechanical design solutions within a regulated industry such as nuclear or other heavy infrastructure sectors?
Are you able to lead technical delivery and confidently justify engineering decisions to regulators (e.g. ONR or equivalent)?
Have you ever wanted to contribute directly to the design and approval of next-generation nuclear technology like SMRs?

The Opportunity
Are you ready to play a leading role in shaping the future of clean energy? This is a unique opportunity to join a growing engineering team supporting the development of Small Modular Reactor (SMR) technology, alongside transformation work across the UK nuclear fleet. With increasing demand from SMR developers and major infrastructure programmes, this role has arisen as part of a significant expansion phase.
You’ll take a senior technical leadership role, delivering complex mechanical design solutions across high-profile nuclear projects. In return, you...

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