Gearing Recruitment Solutions is recruiting on behalf of a specialised Civil Engineering contractor for an experienced Commissioning Engineer to support the delivery of a major water and wastewater treatment project in Southport. This is an excellent opportunity for a commissioning professional with experience in the water industry to join a long-term project, supporting the testing, commissioning and integration of mechanical, electrical and instrumentation systems within a wastewater treatment environment. Working closely with the construction, engineering and project delivery teams, you will play a key role in ensuring plant, equipment and systems are commissioned safely, efficiently and in line with project specifications and operational requirements. The Role Reporting to the commissioning management team, you will support commissioning activities across the project, ensuring systems are tested, verified and ready for handover. Key Responsibilities: * Plan, coordinate and deliver commissioning activities across mechanical, electrical, instrumentation and control systems. * Carry out inspections, testing and functional checks on installed plant and equipment. * Support the commissioning of wastewater treatment processes, including pumps, pipework, valves, treatment equipment and associated MEICA systems. * Review commissioning procedures, test documentation, method statements and risk assessments. * Identify, investigate and resolve commissioning issues, defects and technical challenges. * Work closely with construction and installation teams to ensure systems are mechanically and electrically complete before commissioning. * Coordinate with subcontractors, suppliers, design teams and client representatives to support commissioning progress. * Maintain accurate commissioning records, test results, completion documentation and handover packs. * Ensure all commissioning activities comply with Health & Safety requirements, site procedures and project specifications. * Support performance testing, operational demonstrations and the safe handover of completed systems to the client. Requirements * Minimum 5 years' relevant engineering or commissioning experience. * Previous experience commissioning systems within the water or wastewater industry. * Strong understanding of mechanical, electrical and instrumentation systems in a treatment works environment. * Experience testing and commissioning pumps, pipework, valves, treatment plant or associated MEICA equipment. * Ability to interpret technical drawings, commissioning procedures and equipment documentation. * Experience working collaboratively with construction, engineering and project delivery teams. * Strong problem-solving, communication and organisational skills. * Valid CSCS card. * Full right to work in the UK. Desirable Experience * Previous experience working on clean or waste water projects or AMP7/AMP8 water frameworks. * Experience commissioning wastewater treatment works (WwTW) or water treatment works (WTW). * Familiarity with PLC, SCADA, instrumentation and control systems. * Experience with process commissioning, performance testing and operational handover. * Full UK driving licence. * Proficiency in Microsoft Office 365. The Opportunity * Long-term freelance contract with a minimum duration of 18 months. * Opportunity to contribute to a major water and wastewater treatment project in Southport. * Anticipated start date of December 2026. * Work alongside established construction, engineering and commissioning teams. * Play a key role in bringing new and upgraded treatment infrastructure into operation. Next Steps Apply today or get in touch for a confidential chat about the role