Mechanical & Piping Site Supervisor – Water & Environmental Projects; NL​/FR​/ENG

About the Projects

Join multidisciplinary EPC projects within the water, wastewater, environmental, energy, and sustainable infrastructure sectors, where you will supervise the installation, testing, and commissioning of mechanical equipment, piping systems, and electro‑mechanical installations from construction through project handover.

• Drinking water treatment plants
• Wastewater treatment and water reuse facilities
• Process water installations
• Pumping stations and hydraulic infrastructure
• Sustainable energy and waste‑to‑energy facilities
• Hydrogen and energy transition infrastructure
• Industrial utility and process installations

These projects combine civil, mechanical, process, electrical, and instrumentation disciplines and are delivered from detailed engineering through procurement, construction, commissioning, and operational handover.

As Mechanical & Piping Site Supervisor, you will coordinate and supervise the installation, testing, and commissioning of mechanical equipment, piping systems, valves, steel structures, and associated electro‑mechanical works on site. You will ensure that all activities are executed safely, efficiently, and in accordance with project specifications, quality standards, project schedules, and budget requirements. In addition to site supervision, you will support technical coordination, supplier follow‑up, quality control activities, and commissioning to ensure successful project delivery.

This role combines office‑based work, home office, and regular presence on project sites.

• Regular travel to project sites within Belgium is required.
• Occasional travel to suppliers, fabrication facilities, and Factory Acceptance Tests (FATs) may be required.
• Flexibility to spend extended periods on site during critical construction, commissioning, and start‑up phases is expected.

• Coordinate and follow up piping and mechanical engineering activities during project execution.
• Review technical documentation, drawings, specifications, and supplier documentation.
• Identify technical conflicts and propose practical solutions during construction.
• Coordinate interfaces between mechanical, process, civil, electrical, and instrumentation disciplines.
• Support constructability reviews and ensure installation activities align with project requirements.
• Follow up detailed engineering deliverables, including piping layouts, supports, stress considerations, and installation requirements.

• Support technical evaluations of suppliers and subcontractors.
• Review technical offers and ensure compliance with project requirements.
• Coordinate technical approvals and supplier documentation.
• Follow up fabrication progress and equipment delivery schedules.
• Participate in Factory Acceptance Tests (FATs) when required.
• Ensure corrective actions are implemented and documented.

• Supervise daily site activities related to piping and mechanical installations.
• Coordinate subcontractors and site teams.
• Monitor installation progress against project schedules.
• Ensure works are executed according to approved drawings, specifications, and procedures.
• Verify site readiness before installation activities commence.
• Resolve technical and operational issues arising during execution.
• Monitor site productivity and support planning optimization.

• Ensure compliance with QA/QC requirements and procedures.
• Monitor welding activities, inspections, pressure testing, and mechanical completion activities.
• Ensure compliance with PED requirements and applicable standards.
• Identify, track, and close non‑conformities.
• Participate in inspections, testing activities, and punch‑list management.
• Ensure all quality documentation is properly maintained and completed.

• Support pre‑commissioning and commissioning activities.
• Coordinate mechanical completion and system handover activities.
• Assist in troubleshooting during start‑up.
• Ensure completion of commissioning documentation and turnover dossiers.
• Support operational readiness activities where required.

• Monitor progress against schedules and…