Principal Flood Modeller

Provide technical leadership and delivery support as a Principal Flood Modeller, contributing to complex flood modelling, stormwater, and water infrastructure projects across Auckland and New Zealand. You will apply your hydraulic and hydrological modelling expertise across catchment analysis, flood assessments, and infrastructure design support while working closely with project managers, civil engineers, and multidisciplinary teams.

Based in Auckland, this role offers the opportunity to work on catchment-scale flood modelling and stormwater infrastructure projects while developing client relationships, mentoring team members, and contributing to business growth. You will play a key role in delivering robust, data-driven flood-modeling outcomes that support resilient infrastructure and sustainable urban development.

You’ll work on complex flood and stormwater systems including urban catchments, pipelines, drainage networks, and associated infrastructure, contributing to projects that improve flood resilience and community safety across New Zealand.

• Lead and deliver catchment-scale flood modelling, rainfall and event analysis, and flood level assessments to support resilient infrastructure design
• Provide flood level outputs to inform civil design, including floor levels, site levels, and development controls
• Undertake hydraulic and flow analysis across catchments, pipelines, stormwater networks, and related infrastructure systems
• Apply and interpret results from physical infrastructure such as catch pits, manholes, pipelines, and wider stormwater systems
• Collaborate with civil and infrastructure teams to review designs, re-run models, and test engineering improvements
• Assess the impact of design changes on flood behaviour and overall infrastructure performance outcomes
• Deliver modelling projects using industry tools such as InfoWorks ICM, TUFLOW, HEC-RAS, and ArcGIS
• Build and maintain strong client relationships, provide technical advice, and support business development opportunities
• Mentor and support junior staff while contributing to knowledge sharing across local, national, and global teams.

The following qualifications and experience are highly desired, but if you don’t tick all the boxes you could still be a great fit for this role. Please apply, all applications will be considered.

• Relevant tertiary qualification in Civil Engineering, Environmental Engineering, Water Resources, or similar
• 10+ years’ experience in flood modelling, stormwater, or water resources engineering
• Strong experience using hydraulic and hydrological modelling software such as InfoWorks ICM, TUFLOW, and HEC-RAS
• Experience in catchment modelling, flood estimation, and stormwater system analysis
• Ideally holding, or working towards, Chartered Professional Engineer (CPEng) status or equivalent
• Strong technical problem-solving skills in complex flood and water infrastructure environments
• Ability to interpret and communicate modelling results to inform engineering design and planning decisions
• Strong client relationship and stakeholder engagement skills
• Knowledge of New Zealand stormwater and flood management practices, standards, and council requirements
• Commercial awareness within a consulting project delivery environment

Why you’ll love working with us

• Flexible work arrangements available, aligned with the market and client facing role requirements
• Purchase up to 6 weeks additional annual leave per year         
• Volunteer and representation leave
• Flex public holidays – swap Easter or other holidays for ones that suit you better

Ready to push the limits of what’s possible?

We welcome applications from individuals of all backgrounds, including those with disabilities, additional health or mental health needs, and/or neurodiverse conditions. If you require any adjustments during the hiring process, please let us know.

Applications are reviewed as they come in, and the role may close earlier than expected, so if this opportunity sounds like you, we encourage you to apply as soon as possible.

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About AECOM 

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan. 

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com. 

What makes AECOM a great place to work 

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community - where you have the freedom to grow in a world of opportunity. 

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.