Principal CE&I Protection Engineer -Nuclear

Principal CE&I Protection Engineer – Hybrid (Sellafield Project)
Location: Warrington – 1 day per week on-site, 4 days WFH (with occasional site visits)
£56-61/hour Inside IR35

Project: Sellafield Electrical Distribution Network Upgrade – Infrastructure Strategic Alliance

The Opportunity:
Join the CE&I design team delivering power systems and protection engineering for a high-profile Sellafield project. You’ll play a key role in shaping the Electrical Distribution Network Upgrade through cutting-edge modelling, fault analysis, and protection system design.
Key Responsibilities:

  • Develop and maintain the project’s working ETAP model
  • Produce and review fault calculations
  • Support protection and control system design for 11kV & 400V networks
  • Collaborate with multidisciplinary teams to deliver high-quality designs

Essential Experience:

  • Strong knowledge of BS EN 60909 Fault Calculations
  • Skilled in power distribution modelling software
  • Hands-on experience with protection and control systems (11kV & 400V)

Desirable Experience:

  • Familiarity with Sellafield Design Processes
  • Experience with CAD tools such as Trimble, ERACs, Digsilent
  • Knowledge of IEC61850 and power systems SCADAs
  • Chartered Engineer status, or working towards chartership in a relevant discipline

Why Join Us?

  • Flexible hybrid working (WFH 4 days/week)
  • Work on a high-impact, long-term Sellafield project
  • Opportunity to shape power systems and protection strategy in a safety-critical environment

Apply Now to take your career in CE&I protection engineering to the next level!

Senior Mechanical Designer

Senior Mechanical Designer
Location: Warrington (initially 5 days/week in office; occasional site visits or travel to other offices)
£35-41/hour Inside IR35

About the Project
Join the Asset Care Project Delivery team, supporting the Mechanical asset care portfolio, with an initial focus on the WVP Compressor Project. This is a key role delivering high-quality mechanical design solutions that ensure operational safety, compliance, and reliability across a range of critical projects.

Role Overview
As a Senior Mechanical Designer, you will:

  • Produce engineering design work packages including specifications, drawings, analyses, verification, and assessments that meet legal, functional, and performance requirements.
  • Ensure designs are delivered on time, within cost, and to the agreed quality standards.
  • Work closely within a multi-disciplinary design team, collaborating with technical and non-technical stakeholders.
  • Contribute to mechanical design of piping systems, machinery, and mechanical handling systems, ensuring compliance with relevant standards and legislation.
  • Support the integration of designs into operational facilities, providing clear documentation and advice throughout the project lifecycle.

Essential Experience & Skills

  • Experience working in a highly regulated industry, preferably nuclear.
  • Proven ability to deliver safe, fit-for-purpose, integrated mechanical designs.
  • Qualified and experienced Aveva E3D user.
  • Mechanical design expertise in piping systems (ASME B31.3, PER, PSSR) and machinery/mechanical handling (Supply of Machinery Regulations, LOLER, PUWER).
  • Producing design deliverables such as technical reports, drawings/layouts, installation method statements, and risk assessments.
  • Familiarity with British and ISO Standards.
  • Ability to liaise with stakeholders across all levels and disciplines.
  • Experience in multi-disciplinary, integrated design teams.

Essential Qualifications

  • Degree in Mechanical Engineering (minimum 2 years’ design delivery experience) OR HNC/HND with 5+ years design delivery experience.
  • Training/qualifications in AutoCAD, Autodesk Inventor, and Autodesk Vault.

Desirable Experience

  • Experience in an asset care delivery function on operational facilities, supporting implementation during construction, installation, or commissioning.
  • Familiarity with Sellafield Practices, Processes, Engineering Standards, and Engineering Guides.
  • Experience responding to Engineering Queries (EQs) and Fault Observations (FOs).

This is a fantastic opportunity for an experienced mechanical designer to work on high-profile asset care projects within a regulated, nuclear environment, contributing to safe and operable mechanical solutions across multiple projects.

Highfield are a Certified Carbon Neutral Business

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