Commissioning Engineer - Water Treatment

IXOM plays a vital part in the lives of tens of millions of people every day. We’re the experts behind the scenes, ensuring safe and reliable access and helping industries, businesses, and local communities thrive.

Our products, services and solutions are used across many end markets, including dairy, agriculture, viticulture, electricity, steel, food and beverage, pulp and paper, mining and construction, and water treatment (just to name a few). 

We are supported by over 1,300 people globally and our operations span across four continents and nine countries, with headquarters in Melbourne, Australia. 

About your role

We’re seeking an experienced Commissioning Engineer to support the delivery of high‑quality water treatment solutions across Australia and the APAC region. Based in Melbourne, you’ll lead commissioning activities, drive process optimisation, and ensure a seamless transition from project delivery to operations.

Reporting to the Engineering Manager, you’ll work on projects across Australia and APAC, with travel required for site‑based commissioning and occasional trips of up to three weeks.

If you thrive in hands‑on engineering, enjoy solving problems on site, and want to work across a diverse range of water treatment projects, this role offers an exciting opportunity to make a real impact.

Key Responsibilities

• Lead commissioning activities for water treatment plants and support site start‑ups.
• Troubleshoot process issues and optimise plant performance.
• Prepare operational documentation and deliver training to site teams.
• Support process design (PFDs, P&IDs, equipment sizing and technical documents).
• Assist with project scoping, cost estimates and technical reviews.
• Work closely with suppliers and internal teams to deliver projects on time and on budget.
• Ensure compliance with safety, environmental and quality standards.
• Mentor junior engineers and contribute to continuous improvement initiatives.

Who are we looking for?

• Tertiary qualification in Chemical Engineering, Process Engineering, or a related field.
• Chartered Professional Engineer (CPEng) with Engineers Australia, or working towards it.
• Valid driver’s licence and flexibility to travel across Australia and APAC.
• Strong understanding of water or wastewater treatment processes.
• Experience in commissioning, troubleshooting and site‑based engineering.
• Ability to interpret and prepare PFDs, P&IDs and technical documentation.
• Strong communication skills, including operator training and stakeholder engagement.
• Ability to work independently on site with sound problem‑solving skills.
• Competent in preparing technical reports, commissioning plans and operational documentation.
• Comfortable working in fast‑paced project environments with occasional travel.

Benefits at IXOM

For a start, you'll work for a large global organisation, where you'll not only earn a competitive salary, but you'll also have access to an Employee Assistance Program, a recognition program, and a range of health and wellness benefits and discounts. 

Our wellbeing program is second to none, and we offer a range of education assistance and learning resources, as well as secondment and promotion opportunities to help you grow both personally and professionally. 

We support what’s important to you by promoting workplace giving, diversity and providing volunteering leave, and, of course, we offer flexible working wherever possible. 

To Apply

If this sounds like you, we’d love to hear from you!

Our Process 

At IXOM we are committed to employing individuals who align with our values and meet the requirements of the role. As part of the recruitment process, there are a number of checks which may be conducted to demonstrate applicants’ suitability for a role including police / criminal background checks, medical, drug and alcohol testing, and reference checks.

Diverse candidates have diverse needs. During your recruitment journey, information will be provided about adjustment requests. If you require additional support before submitting your application, please contact our Talent Acquisition team.