Groundwater Modeller

Groundwater Modeller – Perth

• Apply your technical skills to mine water management on a large scale

• Join a high-performing team with clear career development opportunities

• Permanent full-time role – Perth CBD

About the Role

Finding better ways to provide the materials the world needs.

Our Hydrogeology group delivers water management excellence across all stages of mine development, from concept through to operations and closure. As part of this group, we are seeking a Groundwater Modeller to join our Perth-based team. This is a fantastic opportunity for an individual passionate about hydrogeology to contribute to the success of our Pilbara iron ore operations.

You’ll support groundwater modelling tasks, providing vital input for dewatering, water supply, and environmental impact assessments. This role offers excellent development opportunities, serving as a foundation for advancing into more complex modelling responsibilities.

Reporting to the Superintendent Groundwater Modeller, your responsibilities will include:

• Developing, maintaining, and reconciling groundwater models using tools such as MODFLOW.

• Supporting the construction, calibration, and application of numerical groundwater flow models for predictive simulations.

• Assisting in data management, including the integration of GIS and spatial datasets into modelling workflows.

• Participating in uncertainty analyses and continuous improvement initiatives to enhance modelling practices.

• Contributing to technical reports that support environmental impact assessments and operational water management decisions.

• Collaborating with hydrogeologists and specialist modellers to deliver high-quality outputs on time and within budget.

What you’ll bring

• Knowledge of analytical and numerical groundwater modelling packages; experience with MODFLOW and PEST is preferred.

• Familiarity with GIS and programming tools such as Python or MATLAB.

• Ability to plan and deliver modelling tasks, including estimating time and resource requirements.

• A tertiary qualification in Hydrogeology, Environmental Engineering, or a related field.

• Current C-class WA driver’s license.

• A collaborative mindset and enthusiasm for learning and growth within a leading mining company.

Desirable

• Previous field experience, including hydraulic testing, seepage mitigation, and well field optimization.

• Exposure to stochastic or probabilistic modelling methods.

• Advanced knowledge or postgraduate studies in hydrogeology or environmental engineering.

What we offer

• A work environment where safety is always the number one priority

• A permanent position working directly for Rio Tinto

• A competitive base salary reflective of your skills and experience with Annual incentive program

• Comprehensive medical benefits including subsidised private health insurance for employees and immediate family

• Attractive share ownership plan

• Company provided insurance cover

• Extensive salary sacrifice and salary packaging options

• Ongoing access to family-friendly health and medical wellbeing support

• Leave for all of life’s reasons (vacation/annual, paid parental, sick leave)

• Exclusive employee discounts (banking, accommodation, cars, retail and more)

Where you’ll be working

This role is based at our Perth Central Park office, with travel to Pilbara iron ore operations as required. You’ll gain exposure to water management challenges across the full project lifecycle, from greenfield development to closure.

Ready to make a difference?

Join us and experience the unique opportunity to contribute to the responsible management of water resources at the world’s largest autonomous mining operation.

Applications close on 28 July 2025 (Rio Tinto reserves the right to remove advertised roles prior to this date).

About Rio Tinto

Rio Tinto is a leading global mining and materials company. We operate in 35 countries where we produce iron ore, copper, aluminium, critical minerals, and other materials needed for the global energy transition and for people, communities, and nations to thrive.

We have been mining for 150 years and operate with knowledge built up across generations and continents. Our purpose is finding better ways to provide the materials the world needs – striving for innovation and continuous improvement to produce materials with low emissions and to the right environmental, social and governance standards. But we can’t do it on our own, so we’re focused on creating partnerships to solve problems, create win-win situations and meet opportunities.

Every Voice Matters

At Rio Tinto, we particularly welcome and encourage applications from Aboriginal and Torres Strait Islander people, women, the LGBTI+ community, mature workers, people with disabilities and people from different cultural backgrounds.

We are committed to an inclusive environment where people feel comfortable to be themselves. We want our people to feel that all voices are heard, all cultures respected and that a variety of perspectives are not only welcome – they are essential to our success. We treat each other fairly and with dignity regardless of race, gender, nationality, ethnic origin, religion, age, sexual orientation or anything else that makes us different.

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