Commissioning Engineer

1) Technical Responsibilities - Commissioning Delivery

Provide commissioning input into project design and construction stages.

Execute commissioning activities from pre-commissioning through to start-up, testing, and handover.

Commission mechanical, electrical, ICA, and control systems in line with approved procedures.

Carry out and support FATs, SATs, functional testing, and performance testing.

Support system start-up, fault finding, defect rectification, and optimisation.

Work across multiple projects and sites as required by programme needs.

2) SHEQ & Compliance

Carry out all commissioning activities in accordance with UK health and safety legislation and site procedures.

Prepare and follow commissioning risk assessments, method statements, and permits to work.

Comply with CDM Regulations, electrical safety rules, and isolation procedures.

Promote a strong safety culture during commissioning and start-up activities.

3) Stakeholder Communication

Coordinate day-to-day commissioning activities with construction and engineering teams.

Support commissioning readiness checks and staged handovers.

Liaise with subcontractors, suppliers, and OEMs during testing and commissioning.

Assist with client witness testing and acceptance activities.

4) Documentation & Handover

Production of Commissioning Plans and Inspection and Test Plans.

Complete commissioning test sheets, records, and certificates accurately and on time.

Contribute to O&M manuals, asset data, and handover documentation.

Support operator training and operational readiness activities.

Permits, audits, and compliance support.

Programme coordination and progress reporting.

5 ) Core Values

Uphold and promote the Company’s Core Values – Care, Trust, Respect and Sustainability.

You may be required to undertake additional duties, consistent with the responsibilities and level of this role, beyond those specified above.

Essential

NVQ Level 3, HNC or HND+ in Electrical Engineering or equivalent.

ECS/CSCS.

Proven hands-on commissioning experience in water and/or energy sector.

Experience with mechanical, electrical, instrumentation, and control systems (MEICA).

Execution of pre-commissioning, start-up, functional testing, and performance testing.

Experience supporting system start-up, fault finding, and defect rectification.

Experience commissioning PLC, SCADA, and automation-heavy systems.

Desirable

COMPEX, or similar technical qualifications.

Proven experience in water sector projects.

Familiarity with regulatory compliance and inspections (EA, DWI, HSE).

At Trant Engineering, we deliver complex, high-value engineering and construction projects across the UK. From process and water treatment to energy infrastructure upgrades, we play a key role in delivering and protecting critical national infrastructure – shaping the systems that communities and industries rely on every day. Our teams design and deliver full EPC solutions, combining technical excellence with practical, hands-on delivery. We offer end-to-end capabilities – from concept and design through to manufacturing, construction and commissioning utilising a continually evolving in-house expertise. This means you’ll work on projects that are varied, challenging and genuinely impactful. Our multi-disciplinary teams bring together specialists in civil, mechanical, electrical, process, instrumentation, and control & automation engineering, alongside our in-house manufacturing of control panels, MCCs, PLCs and SCADA systems. With over 1,000 people and a strong, growing pipeline of work, it’s an exciting time to join Trant. We are committed to helping our people succeed through our Career Development Association, providing structured support, mentoring and clear pathways to help you reach your full potential.