Lead Mechanical Engineer – Commissioning (Perth)

About the role

ACCIONA is seeking a Lead Mechanical Engineer – Commissioning to provide technical leadership for the Alkimos Seawater Desalination Plant in Perth. Reporting to the Manager, Commissioning, you will guide the final delivery, transition to operations, and oversee a multidisciplinary team of engineers, technicians, and operations staff.

Key responsibilities

• Lead commissioning and integration of complex mechanical systems, ensuring safety, compliance, and operational readiness.
• Resolve system challenges, optimise plant performance, and manage interfaces across disciplines.
• Oversee mechanical performance verification, including rotating equipment, alignment, start‑up, and maintenance strategies.
• Ensure adherence to Australian standards, QA processes, and Safety in Design principles.
• Develop and manage commissioning schedules, punch lists, and contractor/vendor coordination.
• Prepare and deliver commissioning documentation, test reports, and hand‑over packages.

Required profile

• Degree in Mechanical Engineering.
• Strong commissioning experience on major infrastructure projects (desalination, water, energy or similar).
• Proven leadership of multidisciplinary, site‑based teams.
• Excellent planning, coordination and problem‑solving abilities.

Required skills

• Pumps, compressors, piping, pressure testing.
• Flushing, alignment, functional testing, start‑up procedures.
• Interpretation of P&IDs, GA drawings, isometrics, vendor documentation.
• Knowledge of ASME, API and ISO codes and standards.
• QA processes and Safety in Design implementation.