Principal Mechanical Engineer

Overview

As Principal Engineer, you drive Front Engineering for Small Modular Reactors, Advanced Modular Reactors and Fusion projects within the Fusion and Modular Nuclear Business Unit. You lead a design team to deliver key design artefacts and integrate systems across the plant, shaping optioning and technical decisions. You chair design reviews and safety-focused studies, ensuring compliance with standards. This role offers impact across challenging, regulated nuclear projects and opportunities to grow within a global engineering community.

Pay / Benefits

• attractive social benefits
• employee committee
• holiday bonuses
• ongoing training
• numerous career opportunities
• 70% internal promotions

Responsibilities

• Lead Front Engineering activities for SMR/AMR/Fusion projects
• Manage and mentor a design team to produce PFDs, Equipment Datasheets, and related design documents
• Conduct optioneering studies to identify client-aligned solutions
• Develop Design Description Documents and Requirement Specifications
• Integrate developed systems into the broader plant infrastructure
• Act as technical lead for designated scopes
• Chair Design Reviews and lead HAZID/HAZOP studies
• Ensure adherence to H&S policies and Quality Management System standards

Key requirements

• Experience in highly regulated industries such as nuclear, thermal power, or oil and gas
• Expertise in thermal power systems and equipment (steam turbines to pumps) and nuclear plant operations
• Proficiency in optioneering with ALARP and BAT argumentation
• Experience mentoring and leading small teams
• Excellent communication with internal and external stakeholders
• Familiarity with ASME, European, and UK codes and standards; knowledge of Product Safety Legislation
• Understanding of requirements management and systems engineering principles
• Results-oriented with ability to work independently and collaboratively
• British National with eligibility for full UK security clearance

• exceptional communication
• leadership and mentoring
• collaboration across multidisciplinary teams
• optioneering and feasibility studies
• ALARP/BAT argumentation
• HAZID/HAZOP facilitation

…