OCU
Senior Earthing Design Engineer
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Department: OCU Design
Location: Ruislip
Description
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.
What You’ll Do
- 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.
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What You’ll Bring
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.
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To ensure that everyone has a fair opportunity to join our team, please inform us if you require any reasonable adjustments to our recruitment and interview process is, by emailing recruitment@ocugroup.com.
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