Technical Director - Hydraulic Modelling

Technical Director – Wastewater / Storm Water Modelling

Auckland | Lead with purpose, shape resilient communities

Empower change through water.

At Mott MacDonald, we’re a global consultancy with a local heart—committed to delivering sustainable, inclusive, and impactful infrastructure solutions. Our teams across Aotearoa New Zealand are deeply embedded in the communities we serve, working together to shape a better future.

We’re looking for a Technical Director – Wastewater / Storm Water Modelling to join our Water team in Auckland. This is a leadership role for someone who thrives on solving complex challenges, building trusted relationships, and driving innovation in wastewater infrastructure.

Why this role matters

Water is fundamental to life, and how we manage it defines the resilience and wellbeing of our communities. As Technical Director, you’ll lead strategic modelling and network planning projects that support long-term infrastructure development across New Zealand. You’ll also play a key role in mentoring others, growing our market presence, and delivering excellence for our clients.

Your Impact

• Client & Market Focus
• Lead the creation of new opportunities, including sole-sourced work, proposals, and bids
• Build deep understanding of client structures, funding models, and strategic priorities
• Develop market-focused relationships to raise Mott MacDonald’s profile across the water and infrastructure sectors

Project Leadership

• Act as Project Principal, Project Manager, or Design Manager on key projects
• Deliver high-quality outcomes that meet or exceed client expectations
• Apply engineering expertise at a Chartered level (or equivalent), with a strong grasp of professional services and contract delivery
• Navigate commercial risks and industry approaches to water infrastructure delivery
• Use analytical tools and apply best practices in health and safety, risk management, and design
• Manage project resources and budgets effectively, escalating changes as needed
• Lead multiple projects simultaneously, ensuring alignment with strategic goals

About You

You’re a seasoned hydraulic modeller and strategic thinker with a passion for wastewater and / or storm water infrastructure and community impact.

You bring:

• A degree in Engineering, Science, Geography, or a related discipline
• Extensive experience in water and wastewater modelling and network planning
• Proficiency in platforms such as InfoWorks ICM, DHI MIKE+, ArcGIS, and QGIS
• Strong communication and leadership skills, with a collaborative mindset
• A track record of delivering complex projects and building client trust
• A commitment to mentoring others and fostering a culture of growth and inclusion

Why Mott MacDonald?

We’re committed to empowering our people and creating a workplace where everyone can thrive.

Here’s what you can expect:

• Competitive salary and enhanced KiwiSaver contributions
• Flexible working arrangements that support wellbeing and balance
• Ongoing professional development and global career pathways
• A diverse, inclusive culture that values integrity, teamwork, and innovation
• Opportunities to work on projects that make a real difference in Aotearoa and beyond

Join Us

If you’re ready to lead with purpose and help shape the future of water infrastructure, 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.