Hydraulic Modeller

About the Role

Mott MacDonald is seeking a Hydraulic Modeller to join its expanding Water team in Auckland. This position focuses on water and/or wastewater modelling and supports the development of resilient infrastructure that benefits communities across Aotearoa New Zealand.

The role sits within a collaborative environment made up of engineers, planners, and digital specialists. You will contribute to projects that influence how water systems are planned, improved, and sustained for the long term.

Key Responsibilities

• Support hydraulic modelling and network planning work for water and/or wastewater systems.
• Build, update, and improve models used for strategic master planning and infrastructure development.
• Use tools and platforms such as InfoWorks WS Pro, EPANET, InfoWorks ICM, DHI MIKE+, ArcGIS, and QGIS where relevant.
• Work closely with multidisciplinary teams across Auckland, Wellington, and wider locations.
• Explain modelling findings and proposed solutions clearly to clients and other stakeholders.
• Contribute to a team culture built on learning, collaboration, and high standards.

Requirements

• A degree in Engineering, Science, Geography, or another related discipline.
• At least 2 years of experience in water or wastewater network planning and hydraulic modelling.
• Strong analytical ability and a practical approach to solving problems.
• Good communication skills and the ability to work well with others.
• Genuine interest in producing work that has a meaningful community impact.

Benefits and Perks

• Competitive pay with enhanced KiwiSaver contributions.
• Discretionary group and individual performance bonuses for eligible employees.
• Flexible work arrangements that support wellbeing and work-life balance.
• Access to ongoing professional development and international career opportunities.
• A workplace culture that recognises achievement and encourages teamwork.
• The chance to contribute to projects that create real-world impact.
• Comprehensive protection including life, personal accident, and salary continuance insurance.
• Option to buy additional annual leave for greater flexibility.
• Access to employee resource groups, including the Inclusive Network for Women and Corporate Social Responsibility groups.

Eligibility and Additional Information

Applicants are encouraged to apply even if they do not meet every listed requirement, provided they bring the right attitude, values, and potential. The employer values diversity and inclusion and supports suitable opportunities such as part-time and job-share arrangements where possible. Candidates interested in a part-time permanent arrangement are also welcome to apply.

This role is a permanent, full-time position based in Auckland, New Zealand.

Employee Ownership

• The business is employee-owned, with no external investors involved.
• Employees share in the company’s success and can directly benefit through personal and group performance bonuses.
• As careers progress, employees can see their stake and long-term contribution recognised.
• There are formal channels for staff to engage with senior leadership and help influence the future of the organisation.

Role Details

Location: Auckland, New Zealand

Contract type: Permanent

Work pattern: Full time

Market: Water

Discipline: Water

Reference: 14380

Recruiter contact: Matt McKenzie