Site Supervisor - HV Substations

WeAreTechWomen; Cardiff; On-site; GBP 48,000 - 57,000; Full time

Job summary

A leading company in the UK's electricity transmission sector is seeking a qualified candidate to manage construction projects across the South West region. This role involves overseeing site-based activities, ensuring safety and compliance, and contributing to the development of impactful energy solutions. With competitive compensation and a focus on professional development, this is an excellent opportunity to shape the future of energy.

Benefits

Company Vehicle

Paid Travel

Generous pension scheme

26 days annual leave plus 8 statutory days

Financial support for professional memberships

Employee assistance program

Qualifications

• Proven track record in the Utilities or comparable industry construction.
• Understanding of CDM regulations and quality management systems.
• Experience in Safety, Health, Environmental, and Quality.

Responsibilities

• Oversee construction projects and ensure safety and quality standards are met.
• Conduct regular safety audits and lead coordination meetings.
• Contribute to scheme development and facilitate site visits with designers.

Skills

Safety Management

Project Management

Quality Management

Education

Minimum Level 3 NVQ / ONC Electrical or Mechanical qualification

Job description

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Cardiff, GB, CF23 9AN Latteridge, GB, BS37 9TX Wilshire, GB, SN16 9RP

Division: SW Projects

Job Type: Full Time

Requisition Number: 67110

Department: Electricity Transmission - Operations

Job Function: Capital Project Delivery

How do you ensure high levels of safety and quality across various sites?

This is more than just a job—it’s your opportunity to shape the future of the UK’s electricity network. In this key role, you’ll help expand and strengthen the grid to connect and transport more renewable and low-carbon energy to homes and businesses. Keeping the lights on and society moving.

As a National Grid Representative, you’ll oversee a range of construction-based projects (£100k - £10m) such as HV transformer and shunt reactor installations to cable replacements, cyber security upgrades, and protection and control system replacements across the South West region – Cardiff – Bristol – Bath – Swindon. With a company vehicle, paid travel, and a strong work-life balance culture, you’ll have the support you need to thrive.

Your expertise will ensure that site-based construction activities—whether delivered by our principal contractors or National Grid’s internal teams—are managed safely, efficiently, and to the highest standards. You’ll champion safety and quality, support site teams in meeting CDM regulations, help with plant and equipment procurement, conduct regular safety audits, and lead coordination meetings during project delivery. You’ll also contribute to scheme development by completing site visit reports and facilitating site visits with designers.

If you’re passionate about driving impactful projects and being part of a team that’s shaping the UK’s energy future, we’d love to hear from you.

Must have:

• Minimum Level 3 NVQ / ONC Electrical or Mechanical qualification.
• A proven track record in the Utilities (or comparable) industry construction.
• Can demonstrate a good understanding of CDM regs and quality management systems as supervisor under NEC and/or self-delivered works.
• Experience of Safety, Health, Environmental, Quality.
• An awareness of Project, Contract and Stakeholder management.
• Full UK driving licence.
Desirable
• SSSTS or SMSTS qualification.
• Principal Contractor Representative (PC) / Site Manager & Temporary Works Co-ordinator under National Grid’s Procedures.
• NEBOSH / IOSH.

Pay and Benefits

• A competitive salary up to £57,000 pa + Company Vehicle + Paid Travel
• Paid overtime and Bonus.
• 37 Hours Monday – Friday.
• 26 days annual leave plus 8 statutory days.
• The option to buy additional or sell holiday days.
• Generous contributory pension scheme - we will double-match your contribution to a maximum company contribution of 12%. Overall 18%.
• Financial support to help cover the cost of professional membership subscriptions, course fees, books, exam fees and time off for study leave – relevant to your role.
• Access to flexible benefits such as a share incentive plan, salary sacrifice car and technology schemes, support via employee assistance lines and matched charity giving to name a few.
• Family care benefits including a back-up care service for when your usual care arrangements fall through (six paid days each year as standard with the option to purchase further days).
• Access to apps which support health, fitness and wellbeing.