About Us At Onterris, we build careers grounded in purpose, responsibility and real-world impact. “For Planet and Progress” is our north star that guides everything we do. We believe environmental responsibility and human progress are interconnected, interwoven and international. Our scientists, engineers, field teams, consultants and professionals collaborate across disciplines and geographies, guiding industries and governments, ensuring that communities and environments thrive. When you join us, you’re not just forging a career, you’re joining a movement. A movement for better thinking, smarter solutions and lasting impact. Together, we will advance our way of life and protect the integrity of our environment every step of the way. A Day in the Life The Water Treatment Operations Technician will primarily support the operation and maintenance of our water treatment facilities at Williamtown, NSW, while also providing field support to projects and treatment sites across Australia as required. The role is hands-on and varied, combining water treatment plant operations, equipment maintenance and troubleshooting with support for the construction, commissioning and modification of treatment systems. Travel to other project locations will be required as operational and project needs arise. The role will be responsible for a range of activities including: Operate, monitor and maintain water treatment plants and associated wellfield and supporting infrastructure. Perform planned and unplanned maintenance and repairs on mechanical and process equipment. Troubleshoot mechanical, electrical and process equipment to support initial diagnosis and resolution of plant issues. Operate and monitor treatment processes using plant HMI and SCADA control systems. Collect water samples and support the coordination of laboratory analysis and operational reporting. Support the construction, installation, commissioning and modification of new and existing water treatment systems. Coordinate and supervise specialist subcontractors where required. Plan and prioritise work activities to meet operational and project requirements. Communicate effectively with operations and project teams across Australia. Approach all work with a safety-first attitude and comply with Onterris' WHS, Environmental and Quality policies and management systems. Promptly report safety, environmental and quality incidents and hazards. Your Expertise and Skills These requirements reflect the knowledge, skills and abilities that help you do your best work here. Experience in water treatment operations, industrial plant operations, field services or a related technical environment. Relevant trade or technical experience in areas such as mechanical fitting, electrical, plumbing, HVAC or similar is highly regarded. Strong hands-on maintenance skills and confidence using hand and power tools. The ability to troubleshoot mechanical and process equipment. Good computer skills, including Microsoft Word, Excel and email. Strong communication and organisational skills. The ability to work effectively both independently and as part of a team. A current Australian Driver's Licence. The ability to obtain and maintain a Baseline security clearance. A willingness and ability to travel to project sites across Australia as required. Licences and competencies including First Aid, Forklift, Working at Heights and Chemical Handling are desirable. We may provide additional training where gaps are identified. This Position Description is intended to describe the general nature of the work performed and is not an exhaustive list of all responsibilities, duties or skills required. Onterris is a leading global environmental solutions company partnering with organizations to solve complex challenges where environmental pressures, regulatory expectations and operational risks intersect. Guided by our mission to advance the way of life without compromising the integrity of our environment, we believe environmental responsibility and human progress are fundamentally connected. Our scientists, engineers, field teams and consultants apply systems thinking that unites science, data and practical expertise to deliver solutions that strengthen our clients’ resilience, mitigate risk and protect the air, water and soil that sustain communities, while uncovering responsible paths forward for planet and progress. For more information, visit www.onterris.com. We are an equal opportunity employer and encourage applications from people of all backgrounds. We acknowledge that these experiences and perspectives help to enrich our teams and contribute to our ongoing success. We are committed to providing access and reasonable accommodation in our employment for all applicants. For US residents, click here to learn more. At Onterris, we take on complex challenges with purpose and momentum, alongside teams that lead with integrity, deliver together, and invest in your growth. "Working with inspiring coworkers and clients across the globe over the past five years has been incredibly rewarding. Their passion motivates me to improve our client experience and work that I deliver." - Erin Peck, Emissions Services “There are not many places where a toxicologist can be boots-on-the-ground at an environmental emergency one day and deep in a human health risk assessment or litigation the next, but this company is one of them, and honestly, that breadth is what makes me love the work. We are a team of scientists with a broad range of talents and experiences who genuinely take the mission to heart, because protecting people and communities from chemical hazards is not abstract here; it is exactly why we show up every day. The culture reflects that shared commitment in the best way: collaborative, rigorous, and truly motivated by the impact we make together.” - Andre Richardson, Consulting “I knew my position here would be more than just a job. Every day is a new, exciting challenge to solve, and I get to go home knowing that the work I am doing is having a positive impact on the world.” - J Esteves, R&D

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