Senior Hydraulic Modeller

Job Description

Senior Hydraulic Modeller – Water and / or Wastewater

Auckland | Help shape the future of water infrastructure in Aotearoa

Create lasting impact with purpose.

At Mott MacDonald, we’re more than a global consultancy—we’re a community of passionate professionals committed to delivering sustainable, people-focused solutions. Our work is grounded in integrity, collaboration, and care for the communities we serve.

We’re proud of our legacy in Aotearoa New Zealand, where our locally based teams have contributed to some of the country’s most strategic and meaningful infrastructure projects. Now, we’re looking for a Senior Hydraulic Modeller to join our growing Water team in Auckland.

Why this role matters

Water is life—and how we manage it shapes the wellbeing of our people, our environment, and our future. As a Senior Hydraulic Modeller, you’ll play a key role in delivering innovative, data-driven solutions that support resilient, sustainable water systems across New Zealand.

You’ll work alongside a tight-knit, supportive team of engineers, planners, and digital specialists, contributing to projects that span the country and beyond. Your work will directly influence how communities grow, adapt, and thrive.

What you’ll do

• Lead and contribute to hydraulic modelling and network planning projects across water and / or wastewater systems
• Develop and refine models to support strategic master planning and infrastructure development
• Apply your expertise in software platforms such as InfoWorks WS Pro, EPANET, InfoWorks ICM, DHI MIKE+, ArcGIS, and QGIS
• Collaborate with multidisciplinary teams across Auckland, Wellington, and nationally
• Communicate insights and solutions clearly to clients and stakeholders
• Mentor junior team members and contribute to a culture of learning and excellence

What you’ll bring

• A degree in Engineering, Science, Geography, or a related field
• Proven experience (minimum 5 years) in water / wastewater network planning and hydraulic modelling
• Strong analytical thinking and a problem-solving mindset
• Excellent communication skills and a collaborative approach
• A passion for delivering high-quality, impactful work that benefits communities

Why Mott MacDonald?

We believe in empowering our people to thrive—professionally and personally. When you join us, you’ll be part of a diverse, inclusive team that values your voice and supports your growth.

We offer:

• A competitive salary and enhanced KiwiSaver contributions
• Flexible working arrangements that support wellbeing and balance
• Discretionary Group and Personal Performance Bonuses for eligible employees
• Ongoing professional development and global career pathways
• A culture that celebrates achievements and promotes teamwork
• Opportunities to work on projects that make a real difference

Join us in shaping a better future

If you’re ready to use your skills to create positive change, we’d love to hear from you. Even if you don’t meet every requirement, we encourage you to apply—what matters most is your passion, values, and potential.

Together, let’s build a more resilient, inclusive, and sustainable Aotearoa.

Equality, diversity and inclusion

We put equality, diversity and inclusion at the heart of our business, seeking to promote fair employment procedures and practices to ensure equal opportunities for all. We encourage individual expression in our workplace and are committed to creating an inclusive environment where everyone feels they have the opportunity to contribute.

Agile working

At Mott MacDonald, we believe it makes business sense for you and your manager to choose how you can work most effectively to meet your client, team and personal commitments. We embrace agility, flexibility and trust.