Tunnel Electrical Engineer

Civil Works Alliance; Greater London; On-site; GBP 65,000 - 95,000; Full time

Benefits offered by this job

Market leading salaries

Generous annual leave

Pension scheme

Flexible benefits

Job summary

The Civil Works Alliance (CWA) seeks an experienced Tunnel Electrical Engineer to support the Sizewell C project. You will provide electrical engineering expertise across marine and tunnel works, from design to commissioning, ensuring safety, compliance, and performance of electrical infrastructure.

You will report to the site electrical manager, work from the project office in Orwell Logistic Park, with regular site visits, and collaborate with the client and JV partners to deliver reliable

Qualifications

• Degree or equivalent in electrical/electronic engineering.
• ECS Card as a minimum qualification.
• 17th/18th Edition qualification or equivalent.
• Knowledge of electrical systems, power distribution and control systems.
• Experience with TBMs is essential.

Responsibilities

• Prepare technical drawings, specs and documentation for project team.
• Design, test and maintain regime for site electrical systems.
• Oversee TBM power supply, control panels and auxiliaries.
• Calculate power consumption for TBM tunnelling operations.
• Assist installation and commissioning of systems.
• Ensure compliance with codes and safety regs.
• Coordinate with other teams and manage subcontractors' plans.
• Write risk and method statements and complete permits.

Skills

Project management

Process management

Electrical system design

Troubleshooting electricals

TBM experience

Education

Degree in Electrical/Electronic Engineering

ECS Card

17th/18th Edition qualification

Tools

AutoCAD

Job description

Help Shape the UK’s Energy Future

Tunnel Electrical Engineer Opportunity with the Civil Works Alliance (CWA), Supporting Sizewell C

As part of the CWA (Civil Works Alliance), you will support the building of Sizewell C. Sizewell C will be a 3.2-gigawatt power station generating low-carbon electricity for around 6 million homes and will play a key role in our energy future, supplying reliable, clean electricity for at least 60 years. This role will be within the Marine and Tunnels Section.

What will you do?

The purpose of the role is to provide electrical engineering expertise to the project team. The Electrical Engineer will support the design, implementation, and oversight of the electrical systems and infrastructure, ensuring compliance, safety, and performance across the marine and tunnel phase of work.

He will report to the CWA site wide electrical manager in a first step, and he will be based on project office in the Orwell logistic park with regular site visits.

• Prepare technical drawings, specifications, and documentation for the team.
• Design, develop and maintain thorough testing regime for systems on site.
  • Overseeing all electrical aspects and establishment of the TBM, including power supply, control panels, and auxiliary systems.
  • Hands‑on experience setting up Power transformers, Supplies for HV/LT for the TBMs, (Slurry/EPB), Coordinating the Electrical establishment setup at site.
• Commanding knowledge and experience in working out the power consumption of TBM Tunnelling Site (STP, EPB or Dual mode TBMs) including but not limited to STP Establishment Power requirements
• TBM Power requirements
• Conveyor power requirements
• TBM Auxiliary power requirements (Grout Plant, Gantry Cranes, Chiller Plant, ventilation, WTP etc)
• LT/HV Cabling scheme for TBM.
  • Transformers, grids, power supply units,
• Conduct calculations/simulations to support design decisions.
• Assist technically with installation and commissioning of systems.
• Diagnose and resolve electrical engineering problems and equipment breakdowns.
• Ensure compliance with relevant codes/standards and safety regulations.
• Collaborate with other teams on the project and co-ordinate works.
• Write risk and method statements
• Completing permit applications
• Support and review subcontractors design and implementation planning.

What are we looking for?

Knowledge & Skills

Essential

• Project and process management
• Experienced in a similar position and able to demonstrate required knowledge
• Ability to design and troubleshoot electrical systems

Desirable

• Nuclear/license condition experience.
• AutoCAD Experience

Qualifications & Experience

Essential

• Degree or equivalent in electrical /electronic engineering
• ECS Card
• 17^th/18^th Edition Qualification
• Knowledge of electrical systems, power distribution, and control systems
• Experience with TBMs is Mandatory.

Desirable

• Experience working within Joint Ventures/Alliances.
• UK major construction experience and associated training.
• Designing electrical systems, including schematics and control panel layouts.
• Installing and commissioning electrical equipment like motors, sensors, and actuators
• PLC Programming and maintenance:

What we will offer you?

The CWA is a single delivery organisation made of up of the client (Sizewell C) and three parent companies - Balfour Beatty, Bouygues and Laing O'Rourke - which offer industry leading packages including market leading salaries, generous annual leave entitlements, pension scheme and other flexible benefits.

About Us

The CWA celebrates the creativity and innovation that comes from a diverse workforce, and we welcome applications from people of all backgrounds — especially those from under‑represented communities. Our project is built on five core values: Humility, Positivity, Respect, Solidarity, and Clarity.

By joining us, you’ll be encouraged to bring your whole self to work, speak up, and share your ideas. We encourage applications from all suitably qualified candidates, regardless of gender, race, disability, age, sexual orientation, gender reassignment, religion or belief, marital status, or pregnancy and maternity.

We are committed to protecting your privacy. If you decide to apply, please avoid including sensitive personal data in your CV.