Job Description

Job Advert


Due to a period of rapid growth within the business, Jones Bros is expanding its Team with the addition of a new Mobile Plant Fitter to provide site/project based technical support as part of the Workforce. Jones Bros Ruthin (Civil Engineering) Co. Ltd are looking for a Mobile Plant Fitter based in Scotland to join our team, supporting civil engineering projects located in and around Scotland, as well as across the wider UK. This is a key role within our plant maintenance team, offering long-term career development and the opportunity to contribute to major infrastructure works.

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Mobile Plant Fitters at Jones Bros Ruthin (Civil Engineering) Co. Ltd play a vital role in supporting the smooth operation of our civil engineering projects by maintaining and repairing a wide range of mobile plant, crushing, and screening machinery and equipment. They are responsible for diagnosing faults, carrying out repairs, and conducting regular maintenance checks on construction vehicles and plant, including excavators, bulldozers, dump trucks, rollers, and crushing and screening equipment. Fitters work closely with Site Agents, Works Managers, Engineers, and Plant Co-ordinators to minimise downtime and ensure safe, efficient project delivery.

Key Responsibilities:

Carry out routine maintenance checks on plant machinery to ensure optimal performance and compliance with safety regulations. Diagnose faults and troubleshoot mechanical, electrical, and hydraulic systems. Undertake repairs and replacement of components such as engines, transmissions, braking systems, and hydraulics. Keep accurate records of maintenance and repair work completed, including parts used and hours worked. Respond promptly to machinery breakdowns and emergency repair requirements, both on-site and at depots. Work collaboratively with Plant Co-ordinators, Site Agents, and Works Managers to prioritise and plan maintenance tasks. Comply at all times with health and safety legislation and company procedures. Maintain a clean, tidy, and organised working environment, including mobile service vehicles and any workshop areas. Offer basic instruction and support to plant operators on the safe and effective use of machinery. Support depot-based plant teams during fleet maintenance, mobilisation, and decommissioning.

Qualifications and Skills:

Proven experience as a plant fitter, mobile service engineer, or similar, ideally within the construction or civil engineering sector. Strong technical knowledge of heavy plant, diesel engines, hydraulics, and electrical systems. Relevant trade qualifications such as NVQ Level 2 or 3 in Plant Maintenance (or equivalent). Ability to work independently and under pressure in a fast-paced, site-based environment. Excellent problem-solving skills, attention to detail, and a methodical approach. Strong interpersonal and communication skills for working effectively with site teams. Full UK driving licence and flexibility to travel between project sites when required.


Jones Bros Mobile Plant Fitters are instrumental in ensuring equipment reliability, safety, and performance across our projects. Their skills and dedication contribute directly to the successful delivery of high-quality civil engineering works.

Why Join Jones Bros?

At Jones Bros, we're proud to deliver major civil engineering projects that make a difference. Our people are at the heart of what we do, and we invest in their growth and wellbeing.


As a Mobile Plant Fitter, you'll benefit from a supportive environment, exposure to a variety of work, and clear opportunities to develop your career.

Benefits include:

Competitive starting salary. Discretionary bonus (eligibility applies). Company contributing pension scheme (eligibility applies). 25 days holiday plus bank holidays. Competitive travel and subsistence allowances whilst attending site. Ongoing professional development and training. Car allowance or company vehicle (eligibility applies).


If you have any questions before or after submitting your application, please contact the HR Team on hrdept@jones-bros.com.

Please note:

We are not accepting calls from recruitment agencies at this time.