Project Engineer

TRILITY is seeking an energetic and motivated individual who is passionate about delivering essential water and wastewater solutions based in our Yatala office.

The role

We're looking for a hands-on Project Engineer to manage design, build, and commissioning of water treatment and chemical dosing systems. You'll work with clients, designers, fabricators, and site teams to deliver projects safely, on time, and within budget.

Key responsibilities

• Support the Project Manager in delivering projects from design through to commissioning.
• Manage smaller projects independently, including planning, coordination, cost control, and reporting.
• Prepare and maintain project documentation — including programs, risk registers, and progress reports.
• Interpret client specifications, drawings, and tenders to develop technically compliant and cost-effective solutions.
• Prepare or review design documentation such as P&IDs, general arrangements, equipment lists, and control philosophies.
• Develop technical specifications and procurement documentation for materials, equipment, and subcontracted works.
• Evaluate supplier proposals for technical compliance and cost efficiency.
• Coordinate with procurement, manufacturing, and logistics teams to maintain project schedules.
• Plan and oversee site activities, ensuring compliance with WHS, quality, and environmental requirements.
• Lead or support commissioning, testing, and system handover.
• Serve as a key technical contact for clients, consultants, and internal teams throughout project execution.
• Build and maintain strong client relationships to support ongoing collaboration and future work.
• Ensure all engineering and construction activities comply with company and statutory WHS and environmental standards.
• Contribute to risk assessments, method statements, and continuous improvement initiatives.
• Support project budgeting, forecasting, and cost tracking activities.
• Identify, cost, and manage variations in line with contract requirements.
• Assist in ensuring projects are delivered within budget and commercial targets are achieved.

What we are looking for

• Bachelor's degree in Chemical, Mechanical, Environmental, or Process Engineering
• 3–8 years' experience in water treatment, chemical dosing, or related utilities projects
• ·Strong understanding of pumps, valves, instrumentation, and control systems
• Ability to read and mark up P&IDs and engineering drawings
• Experience managing suppliers, contractors, and project schedules
• Excellent written and verbal communication skills
• Strong commitment to safety and quality

Why TRILITY?

TRILITY is an established industry leader, solely dedicated to the delivery of water, wastewater and reuse solutions across New Zealand and Australia's municipal, industrial and resource sectors.

You will be part of a vibrant team at Yatala including managers, project managers, sales and BD personnel, service and workshop technicians, designers, inventory and administrative support. The team you will be part of is connected to our broader Modular Solutions business delivering similar projects across all parts of Australia and New Zealand so travel or relocation to other locations is always a possibility if you are keen.

What we have to offer you

• Yatala based role (some short term travel required) with flexible working options such as working from home
• We place a high importance on work/life balance and managing team workload through robust planning and balancing tasks amongst team members
• Career development opportunities over time into either design, project management or business development pathways
• Wellbeing program including health and wellness discounts and a free membership to Headspace

To apply

If you are looking for a fast-paced, diverse role, then please submit your application, including a cover letter and resume, via the Seek apply button.

For further information on TRILITY, please view our website at

TRILITY is an Equal Employment Opportunity employer who seeks to increase the diversity of its workforce. We encourage people from any background/culture, age, gender, sexual orientation, or people with an impairment to apply for this role.