Consultant name: Alfie Woonton

Call for more information on this position: 0203 879 6452

Job reference: 000000000101010

Date posted: 30/06/2026

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Mechanical Engineering Supervisor (Steam & Mechanical Plant)
Location: South Mimms, Hertfordshire
Hours: Monday to Friday, 8:00am – 5:00pm
Overtime: Weekend overtime available for steam checks and operational requirements

About the Rolegeneration and associated mechanical plant systems at a major new development in South Mimms.

This is a hands-on supervisory role responsible for ensuring all plant and equipment are operated safely, efficiently, and in compliance with statutory regulations, site procedures, and contractual performance standards. The successful candidate will play a key role in delivering planned preventative maintenance, reactive maintenance, statutory compliance, and operational continuity across the site.

Key Responsibilities

• Operate and monitor steam boilers, calorifiers, pressurisation units, pumps, valves, pipework systems, and associated mechanical plant.
• Carry out daily plant inspections and record operational readings.
• Monitor steam pressures, temperatures, water levels, and overall plant performance.
• Ensure the safe and efficient operation of all steam and heating systems.

Planned Preventative Maintenance (PPM)

• Deliver maintenance activities in line with the Annual Planned Maintenance Schedule.
• Complete maintenance tasks in accordance with manufacturer recommendations, statutory requirements, and industry best practice.
• Replace consumables and minor components as required.
• Maintain accurate service records, maintenance documentation, and compliance reports.

Reactive Maintenance

• Respond to plant breakdowns, system faults, alarms, and emergency callouts.
• Diagnose and rectify mechanical and steam system faults efficiently.
• Undertake repairs and minor remedial works.
• Escalate significant defects, risks, or operational concerns to management.

Health, Safety & Compliance

• Ensure compliance with:
  • Pressure Systems Safety Regulations (PSSR)
  • Health & Safety at Work Act
  • Permit-to-Work procedures
  • Lock Out / Tag Out (LOTO) systems
• Participate in risk assessments and safe systems of work.
• Maintain clean, safe, and compliant plant room environments.
• Support a strong safety culture across the site.

Essential Qualifications & Experience

• NVQ Level 3 / City & Guilds in Mechanical Engineering, Building Services, or equivalent.
• BOAS (Boiler Operation Accreditation Scheme).
• Gas Safe Registered with:
  • CODNCO1 – Commercial Catering / Direct Fired Appliances
  • CIGA1 – Indirect Fired Heating Appliances
  • CDGA1 – Direct Fired Heating Appliances
  • TPCP1 / TPCP1A – Testing and Purging Commercial Pipework
• Proven experience operating and maintaining commercial steam systems.
• Strong knowledge of boiler plant and pressure systems.
• Experience with:
  • PSSR regulations
  • Safe isolation procedures
  • Permit-to-Work systems
  • CAFM systems
• Background within commercial building services or facilities management environments.

Desirable Qualifications

• IOSH Working Safely or equivalent.
• Water Hygiene / L8 Awareness.
• HVAC or BMS experience.
• Experience within healthcare, education, research, or large commercial facilities.

Skills & Attributes

• Excellent fault-finding and problem-solving abilities.
• Strong communication and reporting skills.
• Ability to work independently and supervise site activities effectively.
• Good understanding of statutory compliance requirements.
• Ability to prioritise workloads and respond to operational emergencies.
• Professional, proactive, and customer-focused approach.

This role would suit a technically strong mechanical professional with extensive steam plant experience who is looking to take ownership of a critical site operation. You’ll be joining a growing development where reliability, safety, and high standards of maintenance are essential to success.
Alfie Woonton

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