Join SUEZ and help deliver the next generation of sustainable water infrastructure across Australia and New Zealand.

SUEZ is seeking a hands-on Water Treatment Commissioning Engineer on a 12-month Fixed Term Contract to play a pivotal role in the commissioning, start-up and optimisation of a major water and wastewater treatment facility. Working at the intersection of engineering excellence, operational readiness and sustainability, you will lead commissioning activities from construction completion through to operational handover.

About the role

Reporting into the Commissioning Manager your responsibilities will include:

- Lead commissioning and start-up activities across water and wastewater treatment facilities.
- Develop commissioning plans, test procedures, schedules and risk assessments.
- Execute FAT/SAT testing and validate mechanical, electrical, process and control systems.
- Troubleshoot and optimise treatment processes including pumping, chemical dosing, clarification and sludge handling systems.
- Coordinate with SCADA, PLC and automation teams to verify system performance.
- Ensure compliance with safety, environmental and regulatory requirements.
- Support operational handovers, training and commissioning documentation.

About You

- Degree-qualified in Mechanical, Chemical, Electrical or Process Engineering (or equivalent commissioning experience).
- Experience commissioning water or wastewater treatment infrastructure.
- Strong understanding of treatment processes, plant start-up and performance optimisation.




- Exposure to SCADA, PLCs and instrumentation systems.
- Proven ability to solve complex technical problems in live site environments.
- Strong stakeholder management and safety leadership skills.
- Able to work on-site during commissioning phases, including occasional shift or weekend work.
- If your career initially commenced in a trade related role, this will be highly advantageous

Why Join SUEZ?

- Work on major water infrastructure projects that support the circular economy.
- Be part of a global leader with over 160 years of water and environmental expertise.
- Join a collaborative team focused on innovation, sustainability and operational excellence.
- Prospect to influence project outcomes from commissioning through to long-term operational success.

If you are a commissioning professional passionate about delivering high-performing water treatment facilities, we'd love to hear from you.

We are committed to a timely recruitment process and encourage interested candidates to note the following key dates:

- Applications close on Sunday, 15 November 2026
- First-round interviews will be held during the week commencing 23 November 2026
- The successful candidate is expected to be confirmed by 5 December 2026.
- An anticipated start date of mid to late January 2027.

This timeline may be brought forward depending on the quality and volume of applications received.

Please reach out to Justin Knappick, Senior Talent Search Partner, SUEZ ANZ, for an initial dialogue.

📌 Water Treatment Commissioning Engineer (Sydney)
🏢 Suez
📍 Sydney