Commissioning Engineer (Auckland, Queenstown, Christchurch)
We’re currently looking for a Commissioning Engineer to join our growing team. This is a fantastic opportunity to be involved in the final and most critical phase of project delivery - bringing complex treatment plants to life and ensuring they perform as designed.
You won’t be stuck behind a desk - you’ll be hands-on across site and design, working alongside experienced engineers, project teams, and clients to deliver high-quality, fully operational systems.
This role involves travel to project sites across New Zealand, and we are open to applicants from Auckland region, Queenstown area and Christchurch region.
The successful applicant will:
- Support and deliver commissioning activities from pre-commissioning through to performance testing and handover.
- Verify systems meet design intent through FAT, SAT and on-site testing.
- Assist in developing commissioning documentation, including plans, ITPs, test sheets and handover documentation.
- Work closely with design, project delivery teams, subcontractors and suppliers to ensure smooth commissioning outcomes.
- Identify defects, troubleshoot issues and support root cause analysis and system optimisation.
- Contribute to design reviews to ensure systems are practical, operable and commissioning-ready.
- Ensure all commissioning activities are carried out safely and in line with H&S, environmental and regulatory requirements.
- Support operator training, handover, and ongoing optimisation of commissioned plants.
We are looking for people who:
- Hold a relevant engineering qualification (BE or similar).
- Have 2–5 years’ experience in commissioning, process, or related engineering roles.
- Have knowledge of water or wastewater treatment systems (highly desirable).
- Understand site-based work and have strong awareness of health & safety practices.
- Are confident working across both site and office environments.
- Have strong problem-solving, communication, and technical reporting skills.
- Are self-motivated, detail-focused, and able to manage multiple tasks.
- Are open to travel and enjoy working on varied projects across NZ.
- Are passionate about delivering exceptional results for clients while having fun and contributing positively to a great team culture!
What we offer:
At Apex Water, you’ll be part of a dynamic, inclusive team that values innovation, collaboration, and making a real difference to New Zealand’s sustainable future.
- A supportive, team-focused culture where you’re trusted to take ownership and won’t be pigeonholed.
- Exciting, hands-on projects across Aotearoa that challenge and grow your skills.
- Professional growth and advancement opportunities, with a strong commitment to continuous learning and development.
- A focus on work–life balance and wellbeing, with great employee benefits including Health Insurance and an annual Health & Activity Allowance.
- The chance to join a company that genuinely values its people and has fun along the way!
Does this sound like you? To express your interest in this position, or for a copy of the job descriptions email: careers@apexwater.co.nz Only short-listed applicants will be contacted. Successful candidates must have the right to live and work in New Zealand.