Senior Water Treatment Technician
Service & Technical Specialist
$110,000–$140,000 + Super + Fully Maintained Vehicle
(depending on experience)
Perth, WA | Full Time
Join one of Australia's most respected water treatment specialists.
For more than 30 years, Freshwater Systems has designed, installed and maintained water treatment solutions across healthcare, mining, commercial, food & beverage and industrial sectors throughout Australia.
We're looking for an experienced
Senior Water Treatment Service Technician
who enjoys solving technical problems, building long-term client relationships and taking ownership of their work.
This isn't just another service role.
You'll become the trusted technical expert for our WA customers, working on everything from preventative maintenance and emergency breakdowns to commissioning new systems and supporting future growth across the region.
If you enjoy variety, autonomy and working with high-quality equipment, we'd love to hear from you.
The Role
Approximately
70% field service
and
30% technical customer support and relationship management
, including:
Servicing, repairing and maintaining commercial and industrial water treatment equipment
Commissioning new water treatment systems
Diagnosing faults and providing technical solutions
Water quality testing and chemical dosing adjustments
Working with reverse osmosis, UV, filtration, softeners, demineralisation and dosing systems
Preparing accurate service documentation
Supporting existing customers with technical advice
Identifying opportunities to improve customer systems and performance
Working closely with our national technical team
About You




We're looking for someone who already understands the water treatment industry.
Ideally you'll have:
Minimum 3 years' experience in commercial or industrial water treatment
Strong fault-finding and diagnostic skills
Experience with RO, UF, filtration, ion exchange, UV and chemical dosing systems
Excellent communication and customer service skills
Ability to work independently and manage your own schedule
Current Australian Driver's Licence
Computer literacy
Current COVID and Flu vaccinations (preferred for healthcare sites)
Trade qualifications in plumbing, electrical, mechanical or instrumentation are highly regarded.
Why Freshwater Systems?
We know experienced technicians have options.
That's why we focus on providing an environment where people can genuinely enjoy coming to work.
You'll receive:
✔ Company vehicle (fully maintained)
✔ Mobile phone and tablet
✔ Ongoing technical training
✔ Support from one of Australia's most experienced water treatment teams
✔ Diverse work across healthcare, mining, commercial and industrial clients
✔ Genuine career progression
✔ Opportunity to help grow our WA operations
✔ A business that values quality workmanship over rushing jobs
We're Looking For Someone Who
Takes pride in quality workmanship
Enjoys solving complex technical problems
Builds robust relationships with customers
Can work autonomously while being part of a national team
Wants to build a long-term career rather than simply another job
If you're an experienced water treatment technician looking for your next challenge, we'd love to hear from you.
Apply now with your resume and cover letter.

📌 Senior Water Treatment Technician Service & Technical Specialist (Perth)
🏢 Freshwater Systems
📍 Perth