About The Role Right across infrastructure, theres a requirement to not only maintain, but also renew and reimagine. Whatever stage youre at in your career, with us youll have an opportunity to grow and develop. Delivering essential infrastructure services for life, while being safety first, and client and customer centric in afriendly, fun and respectful environment where you are encouraged to thrive. Where will you be working? At M Group Energy, were enabling the energy essential to support our lives. We provide an end-to-end service, delivering solutions in electricity transmission, distribution, renewable energy, EV, metering and home decarbonisation. This role will be within our Electricity Transmission & Renewables team.We design, build and commission substations at voltages up to and including 400kV. Our teams construct and maintain transmission lines and substations, ensuring the efficient and reliable delivery of electricity. This is a site-based role offering the opportunity to travel across sites in South West & South Wales! Want to come and be a part of it? What will you be doing? Are you a skilled Mechanical Fitter looking to power up your career? Join a dynamic team delivering critical infrastructure upgrades across the UK on high-profile National Grid projects. As a Mechanical Fitter youll: Install and assemble HV substation steelwork, disconnectors, circuit breakers, CTs, earth switches, and mechanical plant Fit busbars, support structures, cable trays, and earthing systems, including earth rods and exothermic welds Align and torque components to spec using calibrated tools Assist electrical teams with switchgear and transformer integration Work from drawings, method statements, and manufacturer instructions Conduct inspections to meet NGTS and project quality standards Support commissioning by ensuring mechanical readiness Maintain accurate records and comply with Electricity Safety Rules, HSE policies, CDM, LOLER, and PUWER regulations. What youll bring Recognised mechanical apprenticeship or NVQ L3 in Mechanical Engineering / Fitting / Maintenance (people with relevant experience in the field will also be considered) Competent in the installation of heavy mechanical equipment and structural components Ability to read and interpret detailed mechanical and civil drawings Current CSCS or CCNSG Safety Passport IPAF 3a & 3b Qualifications Full UK driving license willingness to travel across sites EUSR National Grid Person & BESC (substations) accreditation desirable Experience working on National Grid transmission or HV substation projects (typically 132kV, 275kV, 400kV) desirable Whats in it for you? We offer a range of benefits designed to support your life in and out of work, some of which include; Matched or contributory pension scheme Online GP service, 24 hours a day, 365 days a year Employee assistance programme My Rewards portal, access to 1000s of retail discounts Life assurance Cycle to work, salary finance and give as you earn schemes Enhanced maternity, paternity leave and adoption leave Reward and recognition scheme In addition, this role offers; Company van/vehicle and fuel card for business use 21 days annual leave plus bank holidays Standby / Overtime / Call out Personal Accident Cover About us We want to be an employer of choice and a great place to work, attracting diverse and talented people, who join us and make a difference. Were one of the Top 100 UK companies actively supporting and recruiting army veterans. Our ENABLE inclusion networks bring together people who have a shared passion, to help create an environment where everyone belongs. Our values help to shape our culture and how we work with one another. We recruit with these values in mind, to ensure your aspirations, and ways of working, align with ours. Were responsible and go further for our people, clients, communities and the planet Were open and seek new and better ways of exceeding expectations Were together and as one team; the whole is greater than the sum of the parts Were ambitious and embrace opportunity, to lead essential infrastructure services for life Whether youre a trainee, apprentice or graduate, or progressing through your career, our people benefit from industry recognised programmes, training and development. Its an exceptional time to be a part of M Group. Please note: Occasionally, job adverts might be closed before the stated closing date. Do apply as soon as possible to ensure your application is considered. MGroupE LI-BS1 LI-Onsite For certain roles, successful candidates will be subject to 3rd party background checks as part of the hiring process. Some roles require drug and alcohol testing as part of induction and onboarding. About The Company .