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Sr Principal Mechanical Engineer - Fusion & Nuclear; Hybrid

Job in Royton, Oldham, Greater Manchester, OL1, England, UK
Listing for: Assystem
Full Time position
Listed on 2026-10-16
Job specializations:
  • Engineering
    Mechanical Engineer, Systems Engineer
Salary/Wage Range or Industry Benchmark: 90000 - 120000 GBP Yearly GBP 90000.00 120000.00 YEAR
Job Description & How to Apply Below

Assystem is seeking a Senior Principal Mechanical Engineer to join the Fusion and Modular Nuclear (FMN) business unit in the UK. You will lead design development for cooling water systems and related components, working across multiple projects to deliver innovative, safe, and compliant solutions for net-zero power generation.

The role requires strong leadership, experience with DFMEA/HAZID, systems engineering, and interface management, with SC clearance eligibility and ability to travel within

This posting is for the Sr Principal Mechanical Engineer
- Fusion & Nuclear (Hybrid) role at Assystem, based in Royton, England, United Kingdom.

We would love to welcome a new Sr Principal Mechanical Engineer
- Fusion & Nuclear (Hybrid) to our group in Royton, England, United Kingdom.

For the Sr Principal Mechanical Engineer
- Fusion & Nuclear (Hybrid) position at Assystem, we are reviewing applications now.

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