Mechanical Supervisor in Perth

Founded in 1907 as a small family-run business, John G Mackintosh has grown steadily over the years, guided by values that remain central to our success today: Integrity, Diligence, Professionalism, and Collaboration. These principles define our culture and shape the way we work with colleagues, clients, and partners.

Our vision is to be Scotland’s preferred choice for building services solutions, and every member of the JGM team contributes to achieving that goal.

JGM delivers high-quality building services solutions across multiple sectors, supporting clients through safe, reliable, and high-performing engineering delivery.

We are proud to be an equal opportunities employer, committed to providing a workplace free from discrimination, where everyone is treated with respect and fairness.

JGM is committed to equality, diversity, and inclusion and welcomes applications from all suitably qualified candidates.

Role Overview

The role involves supervising site operatives and subcontractors, monitoring progress, ensuring compliance with health and safety requirements, and maintaining high standards of workmanship and quality.

Working closely with the Mechanical Project Manager and wider project team, the Mechanical Supervisor will ensure that works are carried out safely, efficiently and in accordance with project programmes, technical specifications, drawings and company standards.

The role requires a proactive, hands-on approach to site supervision, effective communication, and the ability to identify and resolve issues to support the successful delivery of mechanical projects.

Health, Safety & Environment

Safety is a core value at JGM and must always be a primary consideration in all work activities.

All employees have a responsibility under the Health & Safety at Work Act 1974 to:

• Take reasonable care of themselves and others who may be affected by their actions or omissions.
• Ensure the health, safety, and welfare of colleagues and visitors.
• Protect, as far as reasonably practicable, others from risks arising from work activities.

While specific safety-related tasks may be delegated, overall responsibility remains with the individual. All duties must be carried out in accordance with company Health, Safety, and Environmental policies and procedures.

Key Responsibilities

Site Supervision & Project Delivery

• Supervise and coordinate daily mechanical installation activities on site.
• Ensure mechanical works are carried out in accordance with approved drawings, specifications, project programmes and company procedures.
• Allocate and monitor daily tasks for mechanical operatives and subcontractors.
• Monitor site progress against agreed programmes and report delays or potential issues to the Project Manager.
• Coordinate labour, materials, plant and equipment requirements to support efficient project delivery.
• Attend site meetings and provide updates on progress, resources and outstanding works.
• Identify and resolve day-to-day site issues, escalating matters to the Project Manager where necessary.
• Ensure work areas are organised, maintained, and ready for planned activities.

Technical Supervision & Quality Control

• Oversee the installation of mechanical building services systems, including heating, ventilation, air conditioning, pipework and associated plant and equipment.
• Ensure installations are completed to the required technical specifications, quality standards and good industry practice.
• Review and interpret mechanical drawings, specifications and installation details.
• Identify technical issues, drawing discrepancies and potential clashes, raising these with the Project Manager or relevant technical team.
• Carry out regular inspections of completed and ongoing works to ensure quality and compliance.
• Coordinate snagging activities and ensure defects are rectified promptly.
• Support testing, commissioning and project handover activities.
• Assist with the preparation and collation of quality assurance records, inspection documentation and handover information.

Health, Safety, Quality & Environmental (HSQE)

• Promote and maintain a positive health and safety culture across all site activities.
• Ensure mechanical installation works are carried out in accordance with company health and safety policies, site rules and statutory requirements.
• Ensure operatives and subcontractors understand and comply with approved Risk Assessments and Method Statements (RAMS).
• Conduct site safety briefings, toolbox talks and daily activity briefings as required.
• Monitor safe working practices and take appropriate action where unsafe conditions or behaviours are identified.
• Ensure appropriate PPE, tools, equipment and safe systems of work are used.
• Report accidents, incidents, near misses and hazards in accordance with company procedures.
• Support site inspections, audits and the implementation of corrective actions.
• Ensure good housekeeping and appropriate environmental controls are maintained.
• Coordinate daily labour requirements and ensure resources are used effectively.
• Monitor labour productivity and report progress or resource concerns to the Project Manager.
• Identify material requirements in advance and communicate these to the relevant project team.
• Coordinate material deliveries, storage and distribution on site.
• Ensure materials and equipment are handled and stored correctly to minimise damage and waste.
• Monitor plant, tools and equipment requirements to support ongoing works.
• Assist with identifying opportunities to improve efficiency and reduce unnecessary costs.

Team & Subcontractor Management

• Provide day-to-day supervision and guidance to mechanical operatives, apprentices and subcontractors.
• Ensure site personnel understand their responsibilities, allocated tasks and expected standards of workmanship.
• Monitor subcontractor performance, progress, quality and compliance with site requirements.
• Support the development and mentoring of apprentices and less experienced operatives.
• Promote effective teamwork, communication and professional conduct on site.
• Address day-to-day workforce issues and escalate performance or conduct concerns where appropriate.
• Coordinate activities with other trades and site management teams to minimise disruption and maintain progress.

Communication & Reporting

• Maintain regular communication with the Mechanical Project Manager regarding site progress, labour, materials and technical matters.
• Provide accurate updates on completed works, outstanding activities and potential programme delays.
• Maintain relevant site records, including daily progress reports, labour returns, inspection records and site documentation.
• Attend coordination meetings with project teams, subcontractors and other trades as required.
• Report variations, additional works and changes to project requirements to the Project Manager for review.
• Support effective communication between site teams, management, suppliers and clients.
• Assist with the coordination of testing, commissioning, snagging and final project handover.
• Strong site supervision and leadership skills.
• Excellent organisational and time-management abilities.
• Good technical knowledge of mechanical building services installations.
• Strong understanding of health and safety requirements.
• Ability to read and interpret mechanical drawings and specifications.
• Effective communication and teamwork.
• Practical problem-solving and decision-making skills.
• Ability to coordinate labour, subcontractors and site activities.
• Quality-focused with strong attention to detail.
• Proactive approach to identifying and resolving site issues.
• Ability to work under pressure and meet project deadlines.

Skills & Experience

• Proven experience working within mechanical building services installation or a similar construction environment.
• Previous experience supervising mechanical operatives, subcontractors or site installation activities.
• Strong practical knowledge of mechanical systems, installation methods and construction processes.
• Experience working from mechanical drawings, specifications and project documentation.
• Good understanding of site health and safety requirements and safe working practices.
• Ability to coordinate daily site activities and manage labour effectively.
• Strong communication, organisational and problem-solving skills.
• Ability to work independently and as part of a wider project team.
• Experience monitoring installation quality and ensuring works meet required standards.
• Experience supervising mechanical installations on commercial, industrial or large-scale construction projects.
• Experience working within a Mechanical & Electrical or building services contractor.
• Experience coordinating multiple trades and subcontractors.
• Knowledge of testing, commissioning and mechanical project handover processes.
• Experience working with main contractors or principal contractors.
• Familiarity with quality assurance procedures and site reporting systems.

Qualifications

• Recognised mechanical trade qualification, apprenticeship, NVQ/SVQ or equivalent relevant experience.
• Appropriate CSCS or recognised industry skills card relevant to the role.
• SSSTS or equivalent recognised site supervisory health and safety qualification.
• HNC/HND in Mechanical Engineering, Building Services or a related discipline.
• Relevant manufacturer or specialist mechanical systems training.
• Firs Aid at Work qualification.
• Additional relevant health and safety or supervisory training.

General

This job description outlines the main responsibilities and duties of the role but is not exhaustive. The post holder may be required to undertake other duties within the company as necessary, consistent with the level of responsibility and competence of the role.

JGM reserves the right to amend or update this job description in line with business needs and company priorities.

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