Site Supervisor - National Grid Substation (TP137) Location: Cowley, Oxford Our client, a leading organisation within the UK power and infrastructure sector, is currently seeking an experienced Site Supervisor to support works on a National Grid substation project in Cowley, Oxford. This is an excellent opportunity for a highly competent professional with proven experience in high-voltage environments. The Role As a Site Supervisor, you will be responsible for overseeing on-site operations, ensuring all works are delivered safely, efficiently, and in line with National Grid standards and project requirements. Essential Requirements Candidates must hold the following certifications and competencies: TP137 - National Grid Competent Person / Site Supervisor EUSR or CSCS (Supervisor Level) SMSTS (Site Management Safety Training Scheme) or SSSTS Temporary Works Coordinator (TWC) or Temporary Works Supervisor (TWS) NGET Substation Competencies, including (where applicable): SR 163 Impressed Voltage Management Training National Grid Person Authorisation HSG47 - Avoiding Danger from Underground Services Asbestos Awareness First Aid at Work (or Emergency First Aid minimum) Desirable Experience & Attributes Full UK driving licence Flexible approach to working hours, including weekends or extended shifts if required Strong ability to collaborate with client teams, designers, and multiple contractors Proven experience wo...