Plant Supervisor (Readymix) in Cardiff

PLANT SUPERVISOR – TAFFS WELL CONCRETE PLANT. Taffs Well, Cardiff – days role with overtime. Are you a hands‑on Supervisor from a heavy industrial or manufacturing environment? Do you thrive in a fast‑paced operational setting and take pride in safe, high‑quality production and great customer outcomes? Are you an experienced Supervisor looking for a new challenge? If so and you have experience within a manufacturing, industrial or similar ‘heavy’ industry environment then this could be the role for you!

The Role

We are recruiting a Plant Supervisor - Readymix to lead our RMX operations at our Taffs Well Concrete Plant near Cardiff. You will take full accountability for day‑to‑day plant operations, safety, people leadership, performance and cost control on a small Readymix plant. This role would suit someone who enjoys being visible on site, leading by example, and driving continuous improvement. Product‑specific training will be provided, so we welcome applications from Supervisors or Managers from similar heavy industry backgrounds. The site is easily accessible from Caerphilly, Pontypridd, Porth, Aberdare, Blackwood, Cowbridge, Penarth, Newport, Cwmbran and surrounding areas.

What You’ll Be Responsible For

• Reporting to the Production Manager, you will be accountable for safe, compliant and efficient Readymix plant operations.
• Leading and actively supervising Readymix plant operations.
• Managing all aspects of daily production, including stock control and operational costs.
• Efficient manufacture of concrete, controlling cement content and standard deviation.
• Batching concrete to meet customer requirements while maintaining quality standards.
• Driving performance through KPIs and continuous improvement initiatives.
• Delivering toolbox talks to contractors.
• Maintaining site housekeeping to a high standard.
• Ensuring compliance with company policies, procedures and legislative requirements.
• Resolving operational and customer queries in a timely manner.
• Taking responsibility for your own safety and that of colleagues, contractors, customers and business partners.
• Managing site budgets, including fixed and variable costs.

What We’re Looking For

You’ll ideally already have experience in plant operations, preferably within Ready Mix, Aggregates or a similar production‑led environment, with a solid understanding of operational processes. You’ll also bring:

• Strong working knowledge of Health, Safety and Environmental policies.
• Full understanding of Risk Assessments and Safe Systems of Work.
• Confidence to manage change, multitask and prioritise effectively.
• Strong communication skills with the ability to identify customer needs.
• The ability to feed opportunities and insights into customer services or sales teams.
• A proactive approach to identifying and implementing site and process improvements.
• Evidence of good time management and organisational skills.
• A collaborative leadership style with the ability to motivate others.
• IOSH Managing Safely (preferred).
• NVQ in fixed and mobile plant operations (preferred).

Benefits

• Bonus scheme.
• Enhanced holiday entitlement.
• Contributory pension scheme.
• Access to the Tarmac Reward website with discounts on retailers, holidays, etc.
• Access to our Employee Assistance helpline for free and confidential advice.
• Access to join our Employee Communities (employee networks).
• Training and development opportunities.

Equal Opportunity Statement

Tarmac is committed to being an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for everyone. If you need any reasonable adjustments during the recruitment process, just let us know, we’re here to support you.