Substation Site Supervisor / National Grid Competent Person

Randstad CPE; Holyhead; On-site; GBP 45,000 - 65,000; Full time

Job summary

Randstad CPE, on behalf of a tier-1 contractor, is seeking a National Grid Competent Person for the 132kV Substation project in Holyhead. The role involves overseeing live HV works, enforcing safety documentation and leading designated work parties.

You will act as the Competent Person, manage safety zones, and supervise civil, structural and cabling gangs, delivering daily RAMS reviews and briefings. Long-term assignment until Easter 2027.

Qualifications

• Qualified National Grid Competent Person (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.
• Willingness to lodge away.

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

Competent Person National Grid

Site supervision

Team leadership

Education

SSSTS

SMSTS

NSI 6

NSI 8

Job description

Substation Site Supervisor / National Grid Competent Person

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.