Principle HV Electrical Engineer

OCS; Manchester; Hybrid; GBP 85,000 - 100,000; Full time

Benefits offered by this job

Digital Learning

Retail Perks

Professional Growth

Flexible Pay

Job summary

OCS UK & Ireland seeks a Principal HV Electrical Engineer to lead electrical design across renewable energy, power infrastructure, industrial and utility projects throughout the UK. Based at the Hyde office, you’ll support ICP projects for IDNOs and private clients, delivering technical proposals and engineering support.

You will combine hands-on design with leadership, mentoring juniors and coordinating with clients, DNOs, suppliers and delivery teams across multiple projects.

Qualifications

• Chartered Electrical Engineer status or working towards chartership.
• Experience designing electrical distribution, switchgear and substation systems across HV, MV and LV.
• Experience in renewable energy, industrial or utility projects.
• Knowledge of British and IEC standards and DNO G81 for 11kV/33kV/132kV.
• Proficiency in AutoCAD and detailed electrical drawings.
• Experience preparing equipment specs, protection schemes and earthing designs.
• Strong communication and stakeholder management.
• Ability to manage competing priorities and mentor junior staff.
• Willingness to travel occasionally across the UK.

Responsibilities

• Lead and contribute to electrical design, power studies and proposals.
• Design HV, MV and LV distribution systems with switchgear and substation plant.
• Produce electrical drawings using AutoCAD (single-line, schematics, layouts).
• Develop substation layouts, cable routes, earthing and LV services.
• Prepare specs and equipment schedules for switchgear/transformers.
• Review proposals and drawings against project specs.
• Manage interfaces with clients, network operators, suppliers and internal teams.
• Manage multiple projects at different development stages.
• Mentor junior engineers.

Skills

Chartered Electrical Engineer

AutoCAD proficiency

Electrical design leadership

Stakeholder communication

Travel willingness

Tools

AutoCAD

IPSA

ETAP

Job description

About The Role:

OCS Technical Services is looking for a Principal HV Electrical Engineer to lead and deliver electrical design activities across renewable energy, power infrastructure, industrial and utility projects throughout the UK.

Based at our Hyde office, you’ll support Independent Connection Provider (ICP) projects for Independent Distribution Network Operators (IDNOs) and private clients, alongside electrical infrastructure and plant installations.

You’ll combine hands‑on design work with technical leadership, supporting projects from development through to delivery. Working closely with clients, delivery teams, DNOs, IDNOs, suppliers and other stakeholders, you’ll provide technical proposals, design guidance and engineering support.

Key responsibilities

• Lead and contribute to electrical design, power studies, technical proposals and project support.

• Design HV, MV and LV distribution systems, including switchgear, transformers, relay panels and substation plant.

• Produce electrical drawings using AutoCAD, including single‑line diagrams, schematics, key‑line and block diagrams, termination diagrams and equipment layouts.

• Develop substation and switchroom layouts, cable routes, earthing designs and building LV services.

• Prepare technical specifications and equipment schedules for switchgear, transformers and protection schemes, including protection relay schedules.

• Design earthing systems for MV substations, cable networks and LV installations.

• Prepare technical content for contractor proposal packages.

• Review manufacturers’ proposals and drawings against project specifications.

• Manage technical communication and interfaces with clients, network operators, suppliers and internal delivery teams.

• Manage multiple projects at different stages of development and delivery.

• Support and mentor junior engineering colleagues.

What we’re looking for

• Chartered Electrical Engineer status, or actively working towards chartership.

• Strong experience designing electrical distribution, switchgear and substation systems across HV, MV and LV applications.

• Experience within renewable energy, industrial or utility projects, including solar, wind or battery energy storage systems.

• Good knowledge of relevant British and IEC standards and DNO G81 requirements for projects at 11kV, 33kV and 132kV.

• Proficiency in AutoCAD and the production of detailed electrical drawings.

• Experience preparing equipment specifications, protection scheme documentation and earthing designs.

• Strong communication skills and confidence managing technical discussions with project stakeholders.

• The ability to manage competing project priorities and mentor junior staff.

• Willingness to travel occasionally to meetings and project sites across the UK.

Desirable experience

Experience using IPSA and/or ETAP to undertake load‑flow, fault‑level, protection coordination, G5/5 and voltage stability studies, including preparation of study reports and schedules.

About The Company:

OCS UK & Ireland is a leading facilities management company with 50,000+ colleagues and a turnover in excess of £2bn. We deliver innovative, award‑winning services within facilities management, hard services, cleaning, security and catering.

Our mission is to make people and places the best they can be for our colleagues, customers and the communities we serve. Our commitment to doing business the right way is rooted in our TRUE values -Trust, Respect, Unity, and Empowerment.

Why Work for OCS?

Award‑Winning Employer: Ranked 36th on Glassdoor’s Best Companies to Work For 2025 — we value and motivate our people.

Digital Learning: The OCS Academy offers digital courses and resources to help you build skills and grow your career.

Retail Perks: With our Hapi app, you can gain access to exclusive discounts, rewards and wellbeing resources.

Professional Growth: 600+ live learners across UK&I — Empowering colleagues with further development and qualifications!

Flexible Pay: Access a portion of earned wages before payday with our Wagestream App! (Contract Specific)

We are an equal opportunities employer and rely on a diverse workforce with a broad range of knowledge, skills, and backgrounds to deliver our goals. We offer an inclusive and welcoming environment and actively encourage applications from all individuals regardless of race, gender, nationality, religion, sexual orientation, disability, or age.