Commissioning Engineer – Mechanical

Job Summary

The Commissioning Engineer – Mechanical will be part of a multi-disciplinary team at AESG, conducting site inspections and delivering commissioning services to ensure mechanical systems meet project standards and client expectations.

Responsibilities

• Perform site inspections and witness testing of mechanical systems such as chilled water, HVAC, AHUs, FCUs, CRAH/CRAC units, cooling towers, pumps, ventilation, plumbing, public health, and fire protection systems.
• Review project documents including drawings, sequences of operation, equipment schedules, method statements, testing procedures, and commissioning plans for compliance with specifications and industry standards like CIBSE, ASHRAE, and BSRIA.
• Verify installation readiness including pipework, supports, insulation, labelling, accessibility, and system completeness before testing.
• Witness and confirm pre-commissioning activities such as pressure testing, flushing, cleaning, water treatment, equipment start-up, and system readiness inspections.
• Validate system performance by checking flow rates, temperatures, pressures, control sequences, setpoints, TAB results, and equipment operation against design intent.
• Coordinate testing activities with contractors, TAB specialists, controls/BMS engineers, OEM vendors, and other stakeholders to resolve technical issues and ensure system readiness.
• Monitor commissioning progress, maintain trackers, deficiency logs, and readiness reports, supporting programme delivery.
• Prepare site observation reports, commissioning records, technical comments, non-conformance reports, and punch lists.

Requirements

• MEP / Building Services Engineering Degree, Diploma, or Certificate, or MEP Trade time served with City & Guilds certificate.
• Minimum 5 years experience with an Engineering degree; 6 years with a college diploma; or 7 years with a college or trade certificate.
• Experience conducting site inspections and commissioning of mechanical systems.
• Knowledge of industry standards such as CIBSE, ASHRAE, and BSRIA.
• Ability to work independently on complex tasks with significant experience and advanced competencies.
• Desirable but not essential: Incorporated Engineer status, CSA Grade 4 qualification, or commissioning certification such as BCA, ACG, or NEBB.

What the company offers

• Opportunity to work with an award-winning specialist consultancy with a large dedicated team.
• Exposure to projects across the Middle East, Europe, and Asia.
• Engagement in sustainable design, fire and life safety, cost management, façade engineering, commissioning, and other engineering disciplines.

We refresh listings regularly, but some roles close early on the source platform.