Site Supervisor - Grid Substation Build (Oxford)

Contract Length: Minimum 6 Months

Rate: £450/day (CIS or Umbrella)

Location: Oxford, UK

Start Date: ASAP

We are seeking an experienced Site Supervisor to oversee a major Grid substation construction project in Oxford. This is a fantastic opportunity to work on a high-profile infrastructure build, ensuring safety, compliance, and operational excellence throughout the project lifecycle.

Key Responsibilities:

Supervise daily site operations and ensure compliance with Grid standards.

Coordinate with contractors, engineers, and project managers to maintain timelines and quality.

Enforce health and safety protocols and manage site documentation.

Lead toolbox talks and ensure all personnel adhere to site rules and procedures.

Liaise with stakeholders and report progress regularly.

Essential Qualifications & Authorisations:

NSI 6 & NSI 8 Competent Person Authorisation

SMSTS (Site Management Safety Training Scheme)

First Aid Certification

CCNSG Safety Passport

HSG47 - Avoiding Danger from Underground Services

Full training and authorisations required for SR163 nomination

Candidate Profile:

Proven experience supervising substation builds or similar high-voltage infrastructure projects.

Strong understanding of Grid procedures and safety standards.

Excellent communication and leadership skills.

Able to work independently and manage multiple site activities.

Contract Details:

Duration: Minimum 6 months, with potential for extension.

Rate: £450/day (paid via CIS or Umbrella).

Location: Oxford - site-based role.Please click to find out more about our Key Information Documents. Please note that the documents provided contain generic information. If we are successful in finding you an assignment, you will receive a Key Information Document which will be specific to the vendor set-up you have chosen and your placement.

To find out more about Progressive please visit

Progressive Recruitment, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy | Registered office | 8 Bishopsgate, London, EC2N 4BQ, United Kingdom | Partnership Number | OC(phone number removed) England and Wales