Senior Hydraulic Modeller

Mott MacDonald; Auckland; On-site; NZD 90,000 - 120,000; Full time

Job summary

Mott MacDonald in New Zealand is seeking a Senior Hydraulic Modeller to lead data-driven hydraulic modelling and network planning for water and wastewater across the country. You’ll work with a tight-knit team of engineers, planners and digital specialists to deliver resilient, sustainable systems and provide clear insights to clients.

You’ll hold a degree in Engineering, Science, Geography or a related field with at least two years’ experience and use tools such as InfoWorks WS Pro, EPANET,

Qualifications

• Degree in Engineering, Science, Geography, or related field.
• 2+ years in water/wastewater network planning and hydraulic modelling.
• Strong analytical thinking and problem-solving mindset.
• Strong communication skills and collaborative approach.
• Passion for delivering high-quality, impactful work for communities.

Responsibilities

• Contribute to hydraulic modelling and network planning projects across water and wastewater systems
• Develop and refine models to support strategic master planning and infrastructure development
• Collaborate with multidisciplinary teams across Auckland, Wellington, and nationally
• Communicate insights and solutions clearly to clients and stakeholders
• Learn from team members and contribute to a culture of learning and excellence

Skills

Hydraulic modelling

Water/wastewater network planning

Analytical thinking

Communication skills

Team collaboration

Education

Engineering, Science, Geography degree

Tools

InfoWorks WS Pro

EPANET

InfoWorks ICM

DHI MIKE+

ArcGIS

QGIS

Job description

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Brilliant people trusted to do brilliant things

Mott MacDonald is a vibrant and forward-thinking engineering, management, and development consultancy. Working together as a global team we plan, design, deliver and maintain the transport, energy, water, buildings, and wider infrastructure that is integral to people’s daily lives. We value excellence in every dimension of our business and continuously seekopportunities to improve what we do and how we do it.

We employ brilliant people who combine their diverse skills and experiences to achieve brilliant things. Whether you want to specialise or broaden your experience, you'll be supported by global specialists eager to share their expertise. With numerous opportunities to learn and grow, the possibilities are as diverse as our people. Working as a connected global team, we deliver impactful projects that shape the future.

About the opportunity

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.

• 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 knowledge 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
• Learn from team members and contribute to a culture of learning and excellence.

About you

• A degree in Engineering, Science, Geography, or a related field
• Experience (minimum 2 years) in water / wastewater network planning and hydraulic modelling
• Strong analytical thinking and a problem-solving mindset
• Strong communication skills and a collaborative approach
• A passion for delivering high-quality, impactful work that benefits communities.

Mott MacDonald celebrates diversity and inclusion, offering a supportive work environment that values work-life balance, diversity, inclusion, and equity. We welcome diverse applicants, including First Nations People, people with disabilities, members of the LGBTQIA+ community, and people of all genders, neurodiversity, cultural backgrounds, age groups, and those with intersectional identities.

Our benefits package is designed to enhance your experience:

• A flexible and agile work atmosphere that caters to your professional journey and life's special moments
• A competitive salary complemented by Discretionary Group and Personal Performance Bonuses for eligible employees
• Comprehensive coverage including life and salary continuance insurance, providing peace of mind during uncertain times
• Opportunities to enhance your work-life balance through the option to purchase extra annual leave
• Employee resource groups including the Inclusive Network for Women, Corporate Social Responsibility and more

Employee Ownership

• Our employee ownership model means no external investors, just us, creating a culture of shared success
• Our employees have a stake and a voice in our business, giving them a direct connection to our success through our personal and group performance bonuses
• As your career grows, so does your stake, recognising your long-term impact and contribution
• Your voice matters, with the opportunity to connect directly with senior leadership through formal channels to help shape our future.

You’ve got this!

We endorse a diverse and inclusive workplace, and look to provide suitable opportunities for employees including the opportunity for part time and job shared roles where possible.