Job Title: NDH / Commissioning Technician (LV Systems) - National Grid Substation Location: Alyth Substation, Scotland, PH11 8DX Start Date: ASAP Duration: 10 months Rate: £55-60/hour DOE Hours: 45-50 Hours Per Week Contract Type: Contract Looking for a Commissioning Tech to act as a Senior Authorised Person (SAP) / Nominated Designated Holder (NDH) who can take ownership of LV electrical safety on a live National Grid substation project. This is a key position acting as NDH, managing LV systems within a HV environment. This is ideal for someone with strong substation experience and confidence operating at that level. The Role: We are currently seeking an experienced NDH / Commissioning Technician to take responsibility for LV electrical safety systems on a major National Grid substation project. This role sits at the intersection of commissioning and electrical safety, with responsibility for managing LV systems within a live HV environment. It is ideally suited to a Commissioning Technician or Engineer with SAP authorisation, capable of taking ownership of LV safety on site. Key Responsibilities: Act as NDH (Nominated Designated Holder) for all LV systems on site Carry out and support commissioning activities across LV systems Manage LV isolations, permits, and switching activities Oversee temporary and permanent LV supplies within the substation Ensure compliance with all site safety rules and procedures Interface with SAPs, Commissioning Engineers, and Site Teams Support delivery of works in line with programme and project milestonesRequirements: Strong experience as a Commissioning Technician / Engineer on HV substations Proven capability managing or supporting LV systems within 132kV-400kV environments Experience working on National Grid or DNO substation projectsEssential Certifications: National Grid SAP (Senior Authorised Person) or equivalent (highly preferred) NG Person or DNO equivalent Relevant Electrical QualificationsDesirable: Previous experience operating as NDH or LV Responsible Person Background in HV commissioning environments Experience across NG, SSEN, or SPEN projectsKey Attributes: Strong understanding of electrical safety and safe systems of work Ability to operate both hands-on and in a supervisory capacity Clear communication across commissioning and construction teams Proactive and safety-led approach to deliveryAdditional Information: Working on a major UK transmission project Long-term opportunity with a strong pipeline of work Competitive day rates available (depending on experience) If you or someone you know may be of interest, please get in touch for further details and to be considered. Search is an equal opportunities recruiter and we welcome applications from all suitably skilled or qualified applicants, regardless of their race, sex, disability, religion/beliefs, sexual orientation or age