Principal Mechanical Engineer – Nuclear Front-End (Hybrid)

Assystem UK Ltd; Olney; Hybrid; GBP 70,000 - 100,000; Full time

Benefits offered by this job

Holiday bonuses

Hybrid work 1-2 days remote per week

Job summary

Assystem is recruiting in the Fusion and Modular Nuclear domain in the United Kingdom. You will report to the FEED Engineering Manager and deliver Front Engineering activities for SMR, AMR, and Fusion projects, leading a design team across disciplines.

The role emphasizes optioneering, safety-focused design, and strong collaboration with stakeholders to drive innovative and compliant solutions in highly regulated environments.

Qualifications

• Experience in highly regulated industries like nuclear, thermal power generation, or oil and gas.
• Expertise in thermal power systems and equipment, from steam turbines to pumps, with understanding of nuclear plant operations.
• Proficiency in optioneering and conducting studies to evaluate viable options, with ALARP/BAT arguments.
• Experience mentoring and developing junior staff, with leadership in small teams.
• Excellent communication with internal and external stakeholders.

Responsibilities

• Deliver Front Engineering activities for Fusion, Small Modular Reactors and Advanced Modular Reactors.
• Lead an engineering design team and coordinate multi-disciplinary work streams.
• Spearhead optioneering and ensure designs align with safety, reliability and ALARP requirements.

Skills

Leadership

Team mentoring

Stakeholder communication

Optioneering

Nuclear industry

Job description

Assystem is recruiting in the Fusion and Modular Nuclear domain in the United Kingdom. You will report to the FEED Engineering Manager and deliver Front Engineering activities for SMR, AMR, and Fusion projects, leading a design team across disciplines.

The role emphasizes optioneering, safety-focused design, and strong collaboration with stakeholders to drive innovative and compliant solutions in highly regulated environments.