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Principal Mechanical Engineer

Job in Warrington, Cheshire, MK46, England, UK
Listing for: Pivt Group
Full Time position
Listed on 2026-06-06
Job specializations:
  • Engineering
    Mechanical Engineer, Engineering Design & Technologists
Salary/Wage Range or Industry Benchmark: 125000 - 150000 GBP Yearly GBP 125000.00 150000.00 YEAR
Job Description & How to Apply Below

Pivt is proud to be supporting a leading organisation within the nuclear and highly regulated engineering sector in the appointment of a Principal Mechanical Engineer. This is an excellent opportunity for an experienced engineer to join a multidisciplinary engineering team delivering complex projects across the full project lifecycle, from FEED and detailed design through to commissioning and operational support.

The successful candidate will play a key role in delivering high-level technical studies, supporting major engineering programmes, and providing leadership and guidance within a collaborative engineering environment.

Key Responsibilities

Deliver and manage complex technical studies within multidisciplinary engineering projects

Support mechanical process design from conceptual and strategic phases through to detailed design, construction and commissioning support

Produce and review engineering deliverables including:

  • Technical notes
  • Substantiation notes
  • Mechanical flow diagrams and flow sheets
  • Mechanical drawings and layouts
  • P&IDs
  • Technical specifications and supplier documentation

Support hazard identification and malfunction management activities

Undertake technical studies relating to:

  • Mechanical handling systems
  • Heavy mechanical transfer systems
  • Powder transport, milling and compaction processes
  • High active environments and glovebox systems
  • Mechanical dismantling technologies

Liaise with internal engineering specialists and wider technical teams to support project delivery

Provide technical support during manufacturing, testing, commissioning, operations, maintenance and decommissioning phases

Support and mentor junior engineers within the team

Maintain strong communication with stakeholders, clients and multidisciplinary teams

What We Are Looking For

Strong technical and analytical engineering capability

Excellent organisational and time management skills

Ability to work independently and solve complex technical problems

Strong written and verbal communication skills

Collaborative approach with the ability to work across multidisciplinary teams

Desire to mentor and support junior engineers

Professional and adaptable approach within highly regulated environments

Technical Skills & Experience Required

Minimum 8 years’ experience in a Mechanical Engineering role

Experience delivering engineering design across FEED, detailed design and project delivery phases

Strong understanding of engineering within nuclear or other highly regulated industries

Experience delivering technical studies involving:

  • Mechanical handling systems
  • Mechanical process systems

Knowledge of manufacturing, testing, commissioning, maintenance and decommissioning considerations

Experience reviewing technical specifications and supplier documentation

Previous experience supporting projects on Sellafield or Magnox sites is desirable

Experience leading or supporting engineering teams is advantageous

Qualifications & Training Required

Degree qualified in Mechanical Engineering or a related discipline

Membership of a relevant professional institution desirable

Eligibility to obtain UK security clearance

Full right to work in the UK

Additional Information

Hybrid working arrangement available

Travel to client sites and other offices may be required

Flexible approach to support project and operational requirements

Competitive salary and benefits package available

Long-term career development within a technically advanced engineering environment

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