Service Technician - Water and Wastewater (Perth WA)

About coNEXA

We are a long-term partner in water infrastructure that continuously seeks to improve outcomes for our Clients and Communities. We collaborate with our Clients to develop creative technical and commercial solutions to complex infrastructure challenges. Our core values of safety, innovation and sustainability are aligned with those of our Clients.

coNEXA owns and operates four water assets in Australia and provides operational support to a further 20+ clients. We have an in-house projects and engineering team that provides technical support to these operational sites as well as supporting other clients through the complete project delivery life cycle including concept design, business case development, approvals, detailed design, construction management and commissioning. Our wide ranging experience in water asset operation and maintenance, is readily applied to infrastructure design and delivery, ensuring our solutions are always pragmatic and grounded in reality.

With operations in VIC, NSW, QLD, SA, NT, and WA, coNEXA has established itself as an industry leading owner and operator of water assets in Australia.

More information on our business can be found here:

- coNEXA – www.conexa.com

About the Role

Due to continued and increasing demand for our services, we are seeking a Service Technician to join our team who can undertake process monitoring, routine equipment servicing / monitoring, sourcing and procurement, supervision of 3rd parties, plant optimisation, troubleshooting and customer liaison. The successful candidate will be based in Perth and supported by our national engineering team, providing a unique opportunity to accelerate your professional development.

You’ll join our Perth-based operations team providing operational and technical support to a diverse portfolio of water, wastewater, recycled water and desalination plants across Western Australia. One week you might be on Rottnest Island optimising the island’s treatment plants, the next you could be in the Pilbara, on the Coral Coast or in the forests of the South West supporting our regional and tourism clients, with plenty of time back in Perth (or working from home) in between.

You’ll also work closely with, and provide back-up to, our experienced Perth-based Service Technician at a Government wastewater treatment plant,



giving you a strong local support network and the chance to learn from someone who knows these plants inside out.

What you’ll be doing

- Visiting client sites to review plant performance, fine-tune operating settings, calibrate instruments, inspect mechanical equipment and follow up on defects.

- Remotely monitoring plant performance through SCADA and online systems, and helping client operators troubleshoot process and mechanical issues by phone.

- Servicing, maintaining and optimising a wide range of treatment technologies, including membrane bioreactors (MBR), ultrafiltration (UF), reverse osmosis (RO) and desalination, disinfection and chemical dosing systems.

- Planning and coordinating maintenance, sourcing parts and consumables, and supervising specialist contractors on site.

- Training and mentoring client operators so they can run their plants with confidence.

- Preparing clear, practical site visit and performance reports, and helping clients stay on top of their water quality and regulatory requirements.

- Supporting the commissioning and handover of new and upgraded treatment plants.

Why you’ll enjoy working with us

- Flexibility that works for you – genuine flexible working arrangements, including working from home on remote monitoring, reporting and planning days when you’re not needed on site.

- See more of the country – regular travel to island, coastal, outback and South West locations across WA, plus opportunities to travel interstate to support coNEXA sites and projects in other states.

- Variety every day – exposure to local government, tourism, island and remote community clients, and to everything from sewage and recycled water through to groundwater and seawater desalination.

- Learn from experienced people – direct access to our national engineering team and the chance to get involved across the full project life cycle, from design through to commissioning and operation.





- Trust and autonomy – manage your own schedule and client relationships, with the backing of a supportive team whenever you need it.

- Room to grow – ongoing internal and external training, and a career that can grow as demand for our services in WA continues to increase.

About You

The successful candidate will be able to demonstrate the following skills and experience.

- Experience in the servicing and / or operation of water and / or wastewater infrastructure, or a demonstrated desire to work in this field, would be highly regarded.

- Effective written and verbal communication skills.

- Proficient time and priority management skills.

- Established track record in problem solving and creative solutions.

- Ability to build and maintain customer relationships.

- Be willing to undertake Federal Police security clearance checks (client security requirement).

- A trades background or similar would be highly regarded.

- Proficient computer literacy, including familiarisation with the Microsoft suite of programs, and be willing to learn client specific software, including maintenance management applications.

- A current driver’s licence and a willingness to travel, including regional and remote trips with occasional overnight stays.

- Australian citizen to comply with some of our clients security requirements.

- Hands-on experience with membrane systems (MBR, UF or RO), SCADA-controlled plants, or water quality sampling and testing would be an advantage, but isn’t essential – we’ll support you to build these skills.

- Comfortable working independently and using your initiative, while knowing when to call on the team for support.

Remuneration

A competitive and flexible salary package, including a company vehicle, uniform, tooling, mobile phone and laptop, with access to the company bonus scheme to be negotiated with the successful applicant. In addition, we offer a flexible working arrangements including the opportunity to work from home when not onsite, paid overtime where necessary, travel across WA and interstate and the opportunity for professional development via internal and external training.

Application

Please send a cover letter (mandatory and maximum 2 pages) detailing your suitability for the position and a copy of your CV to ••••@conexa.com by COB 2nd of November 2026.

📌 Service Technician - Water and Wastewater (Perth)
🏢 coNEXA Infrastructure Partners
📍 Perth