Mechanical Supervisor
Optima Site Solutions Ltd
Location: Oxford, London & South
Salary: Highly Competitive (dependant on experience)
Employment Type: Full-Time, Permanent
Working hours: 8–5, Monday to Friday.
Reporting to the Mechanical Project Manager / Operations Director.
The Role
Responsible for the day-to-day supervision of mechanical installations across multiple projects, ensuring works are delivered safely, on time, and to the highest quality standards. Typically overseeing 1–2 projects at a time, working closely with Project Managers, subcontractors, and site teams on commercial mechanical projects up to the value of £2m (Mechanical) – Offices, Healthcare, Higher Education, Museums, etc.
Key Responsibilities
- Supervising all site-based mechanical activities, including HVAC, public health, and pipework installations, ensuring compliance with drawings, specifications, and current regulations
- Ensuring health, safety & welfare is maintained and adhered to at all times on site, including conducting toolbox talks, site inductions, and regular safety inspections
- Coordinating and managing subcontract labour, materials, and site logistics to support efficient delivery of projects
- Assisting the Project Manager in planning and delivering projects from pre-start through to completion and handover
- Monitoring site progress against programme and reporting updates, risks, and issues to the Project Manager
- Ensuring all mechanical installations meet required quality standards, including inspections, pressure testing, flushing, and snagging
- Supporting the commissioning process, ensuring systems are installed and ready for commissioning and handover
- Maintaining accurate site records, including daily reports, site diaries, RAMS, and quality documentation
- Attending site meetings with internal teams, clients, and subcontractors as required
- Providing technical guidance and support to mechanical trades, including pipefitters, plumbers, and HVAC engineers
- Assisting in identifying and reporting variations and site changes
- Supporting the preparation of operation & maintenance manuals and handover documentation
- Working across multiple project sites with occasional visits to the Oxford office
The Company
- 100 years’ experience delivering MEP projects in London and surrounding areas
- Offices based in Oxford and Southampton
- Approximately 130 employees
- £25m annual turnover
- This hire is due to continued company growth and increased project workload
Requirements
- 3–5+ years’ experience working as a Mechanical Supervisor or Senior Mechanical Tradesperson within commercial projects
- Experience delivering mechanical installations (HVAC, public health, pipework) on projects ideally up to £1m–£2m value
- Gold CSCS Card
- SSSTS/SMSTS required
- Strong knowledge of mechanical systems and relevant regulations and standards
- Ability to read and interpret mechanical drawings and specifications
- Strong leadership and organisational skills
- Ability to work under pressure and to tight deadlines
- Excellent communication and problem-solving skills
What You’ll Get
- Highly competitive salary
- Company vehicle with fuel card
- Tools & Plant allowance
- Company pension
- 24 days holiday + bank holidays
- Career progression opportunities for candidates who demonstrate capability and ambition
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