Senior / Principal HV Electrical Engineer (Buildings)

CompanyArup

LocationLondon Area, United Kingdom

Posted At1/22/2026

UK Visa Sponsorship Analytics

Analytics are greyed out due to low classification confidence (44.0%).

Occupation Type

Electrical engineers

Occupation Code Skill LevelHigher Skilled

Sponsorship Salary Threshold

£58,700 (£30.10 per hour)

Occupation rate applies

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Description

Senior / Principal HV Electrical Engineer (Buildings)

London

Joining Arup

Arup’s purpose, shared values and collaborative approach have set us apart for over 75 years, guiding how we shape a better world.

Arup is an independent firm of designers, planners, engineers, consultants and technical specialists offering a broad range of professional services. Independent in ownership and spirit, we combine innovative digital solutions and processes with our domain expertise across the built environment to make a positive difference to the world.

Arup’s electrical engineers bring specialist expertise to solutions for buildings, transport infrastructure and energy, water and waste utilities. Our comprehensive services include energy audits, demand assessment, supply and system resilience, utilities consultancy and sustainable electrical engineering design

The Opportunity

This is an opportunity for a talented and enthusiastic Principal HV Electrical Engineer to join our team and help us shape the future direction of our projects and team. Based in London, our specialist HV team within our Property, Science and Industry group is undergoing significant growth as it continues to win technically challenging work in a multitude of sectors.

Our current and recent project portfolio includes technical electrical infrastructure system design and studies across a wide range of projects including:

locations of national strategic significance, full HV system design and audit
international data centres incoming power and substation design
transmission and distribution strategy for renewable microgrids
MV network load flow and short circuit study for a major London airport.
33kV system design for major London buildings

Our projects need to be part of the transition to net-zero carbon and increasingly we see electrical engineering sitting at the heart of how that transition can be achieved. We are looking for people who can understand the magnitude of the challenge and rise to it, bringing with them a sense of inquisitiveness and an enthusiasm to challenge the status quo.

You will be a key part of a multidisciplinary, collaborative team of Engineers and Technicians, working flexibly from our London office. Our projects are global and will allow you to work with and succeed in an international, multi-cultural business environment with a strong focus on sustainability in all we do.

As a Principal HV Electrical Engineer, you will be responsible for the planning and delivery of the technical designs on your projects and as such will be accountable both to project leaders and the electrical discipline within the business, taking responsibility for projects from inception to completion to achieve outstanding results.

Day to day you will prepare and co-ordinate electrical reports and specifications and undertake comprehensive technical reviews.

You will design, develop and produce high quality electrical designs for your projects involving sketches, calculation plans, technical studies, drawings, reports and models. Alongside your project work, you will also provide technical guidance and mentoring to our junior engineers on the team. The role is external facing and you will be responsible for setting up and delivering project outcomes, including financial performance and client satisfaction. We expect that you will be a capable leader of engineering project teams, achieving through delegation as well as directly.

Responsibilities include:

Leading the design and reviewing of HV and MV electrical network topologies including single bus, double bus, ring bus, breaker-and-a-half, mesh networks, and hybrid configurations.

Evaluate and optimise network configurations for reliability, maintainability, and operational flexibility.

Delivering and managing detailed electrical power system studies including:

Load flow and short circuit analysis

Harmonic and flicker assessments;

Dynamic stability and transient analysis;

Cable thermal analysis and sizing;

Reactive power compensation and voltage control studies;

Transformer and cable energisation impact assessments;

Arc flash hazard analysis and mitigation;

Grid connection optioneering and compliance interface studies; Interpret study results and translate them into actionable design recommendations.

Earthing System Design: Designing AIS, GIS, and hybrid substation layouts, ensuring optimal equipment placement, accessibility, and safety;

Defining and managing design interfaces across disciplines including civil, structural, architectural, control systems, permitting, and environmental teams;

Ensuring compliance with local and international standards and support permitting documentation.

Providing technical leadership and mentoring to junior engineers within the HV/MV team

Reviewing contractor and vendor technical submissions, ensuring alignment with project requirements and standards

Supporting procurement and specification of HV/MV equipment including transformers, switchgear, cables, and protection systems

Liaising with clients, utilities (e.g., National Grid/UKPN/SSE etc), and regulatory bodies to ensure alignment with grid codes and project objectives

Preparing and presenting technical reports, design documentation, and studying outcomes to internal and external stakeholders.

Is this role right for you?

We are looking for people who bring technical excellence and a passion for engineering innovation. If you thrive on solving complex challenges and want to make a real impact, this could be the perfect opportunity.

We are looking for people with the following:

Qualifications & Professional Registration: Degree in Electrical Engineering (or related discipline) and professional registration with an institution such as IET or CIBSE.
Technical Expertise: Deep domain knowledge in electrical engineering and strong understanding of British and IEC standards (BS 7671, BS 7430, BS 5839, BS 9999, BS EN 50522, IEC 60909, IEC 61936, IEC 60287).

Software & Design Skills: Proficiency in electrical design tools such as ETAP, DigSILENT, CDEGS, Cymcap, PSCAD, and Trimble ProDesign.

Protection & Control Systems: Strong understanding of protection principles and schemes including grading studies and coordination; unit protection (REF, SEF, BED); busbar protection; directional overcurrent (DOC); CT/VT supervision; breaker failure protection; auto-reclose schemes; and ability to perform protection calculations and relay setting coordination. Also, good knowledge of SCADA architecture, protocols (IEC 61850, Modbus, DNP3), control diagrams, network topologies, and interface requirements.

Professional Attributes: Excellent communication skills, ability to build relationships internally and externally, commitment to continuous professional development, and enthusiasm for challenging engineering work.