Job Title: MandE Mechanical Fitter - National Grid PersonLocation: Cilfynydd Substation, PontypriddJob Type: Temporary (Inside IR35)Start Date: 16/03/2026End Date: 25/09/2026Hours: 07:30 - 17:30 (45 hours per week)Rate: 300 per dayPositions Available: 1Overview:We are currently recruiting for an experienced MandE Mechanical Fitter to join the team on a National Grid substation project at Cilfynydd Substation.This requirement has arisen due to additional project capacity and will involve working within a live transmission environment, supporting mechanical installation activities to strict National Grid standards. Please note: This role is determined as Inside IR35. Limited Company payment is not a compliant method.Key Responsibilities:Mechanical fitting and installation within a high-voltage substation environmentSupporting MandE installation works in line with project specificationsWorking as part of a coordinated site team under site supervisionOperating in accordance with National Grid safety rules and proceduresSupporting and supervising lifting operations (Lift Supervisor ticket required)Maintaining high standards of health, safety, and quality on siteEssential Requirements:Valid National Grid Persons (NG Person) authorisationValid Lift Supervisor ticketRelevant mechanical fitting qualifications and competency ticketsPrevious experience working within National Grid or transmission substation environmentsFull and correct PPE prior to site attendance (mandatory)Please do n