Lead Mechanical Engineer – Nuclear Power & Fusion Systems

Company: Assystem UK Ltd
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Job Description:

Assystem UK Ltd is seeking a Principal Engineer to join the Fusion and Modular Nuclear Business Unit. Reporting to the FEED Engineering Manager, you will lead Front Engineering for Small Modular Reactors, Advanced Modular Reactors and Fusion projects, guiding a multidisciplinary design team to deliver engineered solutions.

Your mission includes spearheading optioneering, delivering ALARP-compliant designs, and coordinating with internal and external stakeholders across countries.

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Posted: October 14th, 2026