Substation Site Supervisor / National Grid Competent Person

Construction, Property and Engineering; Holyhead; On-site; GBP 52,000 - 62,000; Full time

Job summary

Randstad CPE are recruiting a National Grid Competent Person for a major 132kV substation project in Holyhead. The role is site-based at Penrhos and involves leading designated work parties inside live substation compounds.

The assignment runs through Easter 2027 with a rate of £38.00–£45.00 per hour umbrella PAYE inside IR35, working 07:30–16:30 Monday to Friday. Applicants should have NSI 6/8, SSSTS/SMSTS, and UK work rights.

Qualifications

• National Grid Competent Person authorization (Current on EUSR).
• NSI 6 & NSI 8 (Full).
• Valid SSSTS or SMSTS.
• Proven track record leading work parties on high-voltage substation builds/upgrades.
• Right to work in the UK and full driving licence.

Responsibilities

• Act as the appointed Competent Person receiving and working under National Grid safety documentation (PTW / Limited Access).
• Supervise civil, structural, and cabling gangs within live 132kV compound environments.
• Manage and maintain safe work zones and green-tape demarcation as per NSI 6.
• Control and monitor the movement and operation of plant, MEWPs, excavators, and cranes under NSI 8.
• Deliver daily briefings, review RAMS, and enforce safe working clearances from live HV assets.

Skills

NSI 6

NSI 8

SSSTS/SMSTS

Right to work in the UK

Competent Person Authority (EUSR)

Job description

Competent Person (Substations)

Location: Penrhos, Holyhead

Rate: £38.00 - £45.00/hr (Umbrella PAYE) - Inside IR35

Hours: 07:30 - 16:30 (Monday - Friday)

Contract length: Ongoing until Easter 2027

The Opportunity

Looking for guaranteed site security on a major HV energy transmission scheme well into 2027?

We at Randstad are partnering with a tier-1 contractor to appoint a National Grid Competent Person for the ongoing 132kV Substation project in Holyhead. This is an immediate, long-duration assignment running until Easter 2027, overseeing and leading designated work parties inside live substation compounds.

Key Responsibilities

• Act as the appointed Competent Person receiving and working under National Grid safety documentation (PTW / Limited Access).
• Supervise civil, structural, and cabling gangs within live 132kV compound environments.
• Manage and maintain safe work zones and green-tape demarcation as per NSI 6.
• Control and monitor the movement and operation of plant, MEWPs, excavators, and cranes under NSI 8.
• Deliver daily briefings, review RAMS, and enforce safe working clearances from live HV assets.

Requirements

• National Grid Competent Person authorization (Current on EUSR).
• NSI 6 & NSI 8 (Full).
• Valid SSSTS or SMSTS.
• Proven track record leading work parties on high-voltage substation builds/upgrades.
• Right to work in the UK and full driving licence.

We can consider candidates who are willing to lodge away.

Randstad CPE values diversity and promotes equality. No terminology in this advert is intended to discriminate against any of the protected characteristics that fall under the Equality Act 2010. We encourage and welcome applications from all sections of society and are more than happy to discuss reasonable adjustments and/or additional arrangements as required to support your application.

Candidates must be eligible to live and work in the UK.

For the purposes of the Conduct Regulations 2003, when advertising permanent vacancies we are acting as an Employment Agency, and when advertising temporary/contract vacancies we are acting as an Employment Business.