Rolling Stock Fitter - Technician

Rolling Stock Fitter (C4 Technician) Location: Cardiff Contract Type: Inside IR35 Rate: £33.00 per hour (Umbrella) Duration: 3-6 months initially, with potential for extension Positions Available: 3 Hours: 36 hours per…

Inside IR35 Engineering
Contract type Contract
Posted 4 August 2026

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About this contract

Rolling Stock Fitter (C4 Technician)

Location: Cardiff
Contract Type: Inside IR35
Rate: £33.00 per hour (Umbrella)
Duration: 3-6 months initially, with potential for extension
Positions Available: 3
Hours: 36 hours per week (Day & Afternoon Shifts)

The Opportunity We are currently recruiting for several experienced Rolling Stock Fitters to support a major rolling stock overhaul programme based in Cardiff.

This is an excellent opportunity to join a skilled maintenance team working on the overhaul and refurbishment of a fleet of diesel multiple units. The programme involves the overhaul of 18 units with a planned 20-day turnaround per vehicle.

Essential Requirements

Candidates must possess:

NVQ Level 3, Apprenticeship, or equivalent qualification in a relevant mechanical, engineering, or rolling stock discipline
Proven rolling stock maintenance, overhaul, or heavy maintenance experience
Demonstrable C4 competency across the majority of the activities listed below

C4 Experience Required

Successful candidates should have experience in most of the following:

Autocoupler removal and refit
Intermediate Bar Coupler removal and refit
Spring Box Assembly work
Gangway removal and refit
Gangway Flexi removal and refit
Valve change-outs
Bogie disconnection
Centre Pivot / Pedestal removal and refit
Hydraulic reservoir and hose removal and refit

Key Responsibilities

Carrying out mechanical overhaul, maintenance, and refurbishment activities
Working to engineering standards, specifications, and maintenance instructions
Ensuring all work is completed safely and in accordance with quality requirements
Supporting the delivery of overhaul programmes to strict timescales
Completing all associated documentation accurately and on time

What's on Offer?

£33.00 per hour (Umbrella)
Long-term contract opportunity with extension potential
Immediate starts available
Opportunity to work on a significant rolling stock overhaul programme
Stable shift pattern with consistent hoursIf you have the relevant C4 experience and rolling stock qualifications, we'd be keen to hear from you.

Rullion celebrates and supports diversity and is committed to ensuring equal opportunities for both employees and applicants

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