Workshop & Maintenance Supervisor (Mobile & Fixed Plant)

Acorn by Synergie; Cardiff; On-site; GBP 40,000 - 52,000; Full time

Benefits offered by this job

Competitive Salary

Company Pension Scheme

Ongoing Training and Development

Company PPE Provided

Free On-Site Parking

Supportive and Professional Working En

Job summary

Acorn by Synergie in Cardiff is recruiting a Workshop & Maintenance Supervisor. The role oversees a team of technicians, plans preventive maintenance, and minimises downtime across a diverse fleet of heavy plant.

The ideal candidate has strong mechanical and electrical diagnostic skills, extensive workshop management experience, and a proven track record in cost control and preventive maintenance planning.

Qualifications

• NVQ Level 3 or equivalent in plant maintenance or related discipline.
• Minimum 5 years' experience managing a heavy plant workshop.
• Strong diagnostic skills across mechanical, hydraulic and electrical systems.
• Experience with OEM diagnostic tools and troubleshooting software.
• Proven planning, budgeting and fleet management capabilities.

Responsibilities

• Lead the workshop team to ensure safe, productive operations.
• Plan and schedule preventive maintenance based on hours and OEM guidance.
• Prioritise breakdown repairs to minimise downtime.
• Monitor workshop productivity and allocate tasks.
• Develop maintenance schedules, service plans and inspections.
• Manage supplier quotes and parts sourcing cost-effectively.
• Oversee parts purchasing and inventory control.
• Analyse maintenance costs and identify efficiency gains.
• Support oil sampling and condition monitoring programmes.
• Coordinate with operations to meet availability targets.
• Supervise external contractors and repair providers.
• Investigate failures and implement corrective actions.
• Lead continuous improvement across maintenance operations.
• Ensure health, safety and environmental compliance.
• Deliver training and mentoring to workshop staff.

Skills

Mechanical diagnostics

Electrical diagnostics

Leadership

Maintenance planning

Cost management

Fleet management

KPIs & budgeting

MS Office

UK driving licence

Education

NVQ Level 3 in Plant Maintenance

Tools

CAT equipment experience

Sennebogen

Develon (formerly Doosan)

CMMS

OEM diagnostic software

Job description

Workshop & Maintenance Supervisor

Cardiff | Temporary to Permanent | Full-time

Introduction

This is a fixed, site-based leadership role in Cardiff, responsible for managing a team of technicians and ensuring the reliability, availability and cost-effective maintenance of a diverse fleet of heavy plant and machinery.

The successful candidate will have strong mechanical and electrical diagnostic skills, extensive workshop management experience, and a proven track record in preventive maintenance planning, cost control and technical problem-solving.

Key Responsibilities

• Manage and lead the workshop team, ensuring a safe, productive and professional working environment.
• Plan, schedule and deliver all preventative maintenance activities based on machine operating hours and manufacturer recommendations.
• Prioritise and coordinate breakdown repairs to minimise equipment downtime.
• Allocate work effectively and monitor workshop productivity and performance.
• Develop and maintain maintenance schedules, service plans and inspection programmes.
• Manage supplier relationships, obtain quotations and source parts and services cost-effectively.
• Oversee parts purchasing and inventory control.
• Conduct maintenance cost analysis and identify opportunities for efficiency improvements and cost savings.
• Manage and continuously improve the company's oil sampling and condition monitoring programme.
• Liaise with operations teams to ensure machinery availability meets business requirements.
• Supervise external contractors and specialist repair providers.
• Investigate equipment failures and implement corrective actions to prevent recurrence.
• Support continuous improvement projects across maintenance operations.
• Ensure compliance with all health, safety and environmental requirements.
• Deliver training, mentoring and technical support to workshop personnel.

Skills & Experience Required Essential

• Minimum 5 years' experience managing a busy plant or heavy equipment workshop.
• NVQ Level 3 (or equivalent) in Plant Maintenance, Heavy Vehicle Maintenance, Engineering or related discipline.
• Strong experience with heavy mobile and fixed plant equipment.
• Advanced fault-finding and diagnostic capabilities across:
• Mechanical systems
• Hydraulic systems
• Electrical systems
• Engine management systems
• Experience using OEM diagnostic software and electronic troubleshooting tools.
• Proven experience in maintenance planning and fleet management.
• Strong understanding of maintenance KPIs, cost management and budgeting.
• Excellent organisational and leadership skills.
• Full UK Driving Licence.
• Competent user of Microsoft Office (Excel, Word, Outlook and Teams).

Highly Desirable

Experience working with:

• CAT (Caterpillar)
• Sennebogen
• Develon (formerly Doosan)
• Material Handlers
• Loading Shovels
• Excavators
• Telehandlers
• Terminal Tractors
• Tipping Trailers

Additional experience with:

• Oil analysis and condition monitoring programmes
• Welding and fabrication processes
• Maintenance management systems (CMMS)
• IOSH Managing Safely or equivalent qualification

What We Offer

• Competitive Salary
• Company Pension Scheme
• Ongoing Training and Development
• Company PPE Provided
• Free On-Site Parking
• Supportive and Professional Working Environment

Working Hours

Monday to Friday, typically between the hours of 06:00 & 17:00

Overtime available

Occasional weekend working as required