Senior Earthing Design Engineer

Senior Earthing Design Engineer

Department: OCU Design

Employment Type: Permanent - Full Time

Location: Ruislip

Reporting To: Ed Yeates

Location: Ruislip, United Kingdom

Contract: Permanent

Working Pattern: Full‑Time

Renumeration Indicator: Competitive salary plus company vehicle, pension and private healthcare. Remuneration for this role is benchmarked competitively within the Infrastructure and energy sector, and sits within our D2 band, reflecting the seniority and scope of the position.

The Opportunity

Are you an experienced earthing specialist ready to take ownership of safety‑critical power infrastructure designs? Do you want to play a leading role in HV and EHV substation projects across the UK? We are seeking a Senior Earthing Design Engineer to lead the earthing design elements of major electricity network projects within a regulated Distribution Network Operator (DNO) environment.

• Deliver safe, compliant HV and EHV earthing designs that protect personnel, the public, and critical infrastructure under both normal and fault conditions.
• Drive high‑quality engineering outcomes by leading earthing design activities from feasibility through to detailed design in line with DNO standards, ENA specifications, and industry best practice.
• Improve project performance and reduce risk through accurate earthing calculations, modelling, and technical assurance using industry‑standard tools and methodologies.
• Build trusted relationships with DNOs and key stakeholders to secure timely approvals, resolve technical challenges, and support efficient project delivery.
• Ensure seamless integration of earthing systems by collaborating closely with electrical, civil, and cable design teams across multi‑disciplinary projects.
• Support successful construction and commissioning outcomes by providing technical guidance to contractors, resolving site issues, and reviewing as‑built information.
• Champion a culture of safety and continuous improvement by embedding safety‑by‑design principles, maintaining compliance, and contributing to the ongoing enhancement of earthing design standards and practices.

• Essential:
  • Degree qualified in Electrical Engineering or a related discipline.
  • Chartered Engineer (CEng) status or actively working towards chartership.
  • Significant experience delivering HV and EHV earthing designs for UK electricity network projects.
  • Strong understanding of earthing requirements within DNO or ICP environments.
  • Proven experience with substation earthing systems for GIS and AIS substations.
  • Practical knowledge of UK electrical safety regulations and earthing standards.
  • Expert understanding of earthing theory, fault current distribution, soil modelling, and mitigation techniques.
  • Ability to interpret and apply ENA, BS EN, IEC, and DNO‑specific earthing standards.
  • Confident producing and checking earthing layouts, sections, details, and calculation reports.
  • Strong technical writing skills and ability to justify design decisions to clients and authorities.