Principal Mechanical Engineer – Design to Manufacture

Company: Assystem
Apply for the Principal Mechanical Engineer – Design to Manufacture
Location: Bristol
Job Description:

Overview

In this role you drive the timely delivery of lifecycle milestones across design, manufacture, delivery and commissioning within a regulated nuclear engineering context. You will coordinate technical reviews, resolve engineering queries and manage interfaces with multiple stakeholders to keep projects on plan. You’ll escalate safety-critical issues, support risk and change management, and ensure compliance with standards and contractual requirements. You will work with cross-functional teams to deliver engineering deliverables, support qualification activities, and promote effective information exchange across the project ecosystem. This is an opportunity to contribute to large-scale nuclear

Pay / Benefits

  • attractive social benefits
  • ongoing training
  • internal promotions (70% managers promoted internally)
  • hybrid work (1-2 days remote)
  • employee committee
  • holiday bonuses

Responsibilities

  • Deliver lifecycle handover points (design > manufacture > delivery > commissioning) and expediting acceptance by stakeholders
  • Manage and resolve engineering issues (EQ, EW, open points, design change requests)
  • Engage approval bodies when the Safety Case is impacted
  • Liaise with all parties in the delivery of works and ensure timely information exchange
  • Prioritize queries and issues to discharge resolution efficiently
  • Deliver engineering deliverables in collaboration with stakeholders
  • Provide engineering support across activities including installation interfaces and timely escalation
  • Ensure Technical Acceptance and associated surveillance are delivered
  • Support management of Engineering-related risks and opportunities (ARM)
  • Ensure design interfaces and supplier feedback are effectively managed
  • Support Quality Management Lead in resolving manufacturing NCRs
  • Follow-up equipment qualification programmes to expedite engineering issues

Key requirements

  • Technical leadership experience in a technically complex environment with strong safety, security and environmental focus, preferably in Nuclear Energy or similar regulated sector
  • Awareness of integrated management system and relevant policies, procedures, standards and documents for technical and contractual management
  • Significant expertise in a relevant technical discipline
  • Proven track record of engaging stakeholders and resolving issues
  • Ability to build and maintain effective project team relationships
  • Excellent verbal and written communication, presentation, influencing and facilitation skills
  • Strong organizational skills and network building capabilities
  • Solid numerical/analytical skills
  • Knowledge of PWR/EPR design; experience in PWR/EPR construction is an advantage
  • Knowledge of EU directives, British Standards, and company standards and procedures
  • Degree and chartered status in engineering, construction or related field
  • Good knowledge of CDM Regulations
  • Project Management knowledge with exposure to either APM Body of Knowledge or PRINCE2
  • stakeholder engagement
  • communication
  • facilitation
  • PWR/EPR design knowledge
  • Nuclear engineering knowledge
  • Risk and issue management

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Posted: September 30th, 2026