About CSI Mining Services
A wholly owned subsidiary of Mineral Resources Ltd (ASX: MIN), CSI Mining Services is a leading provider of pit-to-ship mining services unique to the resources industry.
As one of Australia's largest mining services contractors, CSI supports MinRes projects and external clients by providing capital infrastructure and whole-of-life operational expertise.
CSI has operations in Western Australia and Queensland.
About CSI Mining Services
A wholly owned subsidiary of Mineral Resources Ltd (ASX: MIN), CSI Mining Services is a leading provider of pit-to-ship mining services unique to the resources industry.
As one of Australia's largest mining services contractors, CSI supports MinRes projects and external clients by providing capital infrastructure and whole-of-life operational expertise.
CSI has operations in Western Australia and Queensland.
About The Opportunity
As the largest global crushing contractor, we have operations across Western Australia - operating in iron ore, lithium and hard rock.
We are seeking expressions of interest from Water Treatment RO Operators to join our team at Onslow Port.
These roles arefull time positionsand can allow you to grow your skill set withon-site trainingand the opportunity to develop your career on the tools and as a leader.
Roster & Travel
This position operates on an 8/6 roster (8 days on, 6 days off) with Monday fly days and flights provided from Perth.
Enjoy excellent work-life balance with regular time home while being part of our essential operations team.
What we offer
Full-time positions
Competitive rates – plus quarterly bonuses!
Industry-leading food provided at MinRes site camps – run by MinRes' own chefs!
Opportunity for career progression and training




Access to MinRes employee benefit program – including MinRes MyShare Plan
Key Responsibilities
As an RO Operator, you'll be responsible for the safe and efficient operation of our water treatment and distribution systems.
This includes monitoring water quality, conducting routine maintenance, troubleshooting equipment issues, and ensuring compliance with regulatory standards.
You'll work with cutting-edge technology while maintaining the critical water infrastructure that keeps our operations running smoothly.
All aspects of housekeeping including cleaning of mobile plant, control room and company vehicles, and also including clean-up of spillage within the Plant using both manual and mechanical methods.
Manual handling ability of up to 40kg as the role involves lifting, pushing, pulling, work at heights and others exertions associated with manual roles and requires certain physical demands and exposure to challenging environments
Identify, investigate, report and fix all defects and spillage in assigned areas of the fixed plant, and ensure there is work planned to fix in shutdowns where required.
Assisting maintenance workers with maintenance and servicing of Plant and Equipment during Plant shutdowns and breakdowns.
Completion of any other tasks and activities within your competency as directed by the Site Leadership Team




Compliance with all Company & Site Rules and Regulations as stipulated by the Company and/or the Client
Participate in hazard identification, assessment and control
Providing input and feedback for Plant and Operational improvements.
What is required
Experience with R/O treatment plants and maintaining Potable water
Water Quality checks and compliancy sampling
Demonstrated safety commitment
Valuable verbal and written communication skills.
Ability to carry out work instructions and directives to provide satisfactory outcomes
Ability to work within a team environment to achieve desired results
Flexible and versatile attitude
Tickets & Licenses Required
Current Australian Driver's License (HR license desirable)
4 years experience in water treatment, pumping systems, or utilities operations
Cert 3 in Water Operations - Desirable
Construction Induction Card
Working at Heights, Confined Space and Gas Testing (desirable)
Nationally Coordinated Criminal History Check (NCCHC)
Ability to meet pre-employment medical and drug & alcohol screening requirements.
About Our Process
At Mineral Resources, 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 applicant's suitability for a role including reference checks, Australian work rights, Nationally Coordinated Criminal History Check (NCCHC), pre-employment medical, and or drug alcohol testing.
Mineral Resources Limited is a proud Equal Opportunity Employer, and we encourage applicants from diverse backgrounds to apply.
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📌 Water Treatment Ro Operators | 8:6 Rosters | Onslow (Melbourne)
🏢 Mineral Resources
📍 Melbourne