Come grow with us.

Balancing the world’s need for safe, reliable water with protecting this critical natural resource for the future requires a deep understanding of interconnected systems.

We work with clients across the entire project life cycle — from initial planning studies through final construction and operations and maintenance services — on both traditional and alternative project-delivery options (design-build, public-private partnerships and financing).

Everyone belongs at AECOM

We’re committed to diversity, equity, inclusion, and belonging - because great ideas come from diverse perspectives. AECOM is proud to be a Fortune 500 Most Admired Company, a WGEA Employer of Choice for Gender Equality, #Work180 Equitable Workplace Awards 2025 Winner and an AWEI Bronze Tier LGBTQ+ Inclusive Employer.

We are seeking a Senior Flood Modeller to support catchment-scale flood modelling, stormwater analysis, and water infrastructure projects across Auckland and New Zealand. You will apply hydraulic and hydrological modelling expertise to inform flood assessments, drainage design, and resilient infrastructure outcomes.

You will take ownership of modelling tasks, deliver high-quality technical outputs, and collaborate closely with civil engineers, project managers, and multidisciplinary teams. This role also includes mentoring junior staff and contributing to project delivery and client engagement.

• Lead and deliver catchment-scale flood modelling and stormwater analysis tasks
• Undertake rainfall, flood level, and hydraulic analysis to support infrastructure design
• Provide model outputs to inform floor levels, site development, and drainage design
• Apply and interpret results across stormwater systems including pipes, channels, and drainage networks
• Collaborate with design teams to assess impacts of engineering changes on flood behavior
• Use tools such as InfoWorks ICM, TUFLOW, HEC-RAS, and ArcGIS
• Prepare technical reports, modelling outputs, and design inputs
• Support project delivery, including smaller work packages where required
• Contribute to client communication, meetings, and stakeholder engagement
• Assist in bids, proposals, and business development activities
• Mentor and support junior team members

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.

• Degree in Civil, Environmental, or Water Resources Engineering (or similar)
• 5+ years’ experience in flood modelling or stormwater engineering
• Strong experience with InfoWorks ICM, TUFLOW, and/or HEC-RAS
• Understanding of catchment modelling and stormwater systems
• Working toward CPEng (or equivalent) preferred
• Knowledge of NZ stormwater and flood management standards
• Strong communication and teamwork skills

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.

Learn more about life at AECOM: LinkedIn, Facebook , Instagram, X, YouTube - explore our AECOM voices, employee stories, latest projects, and much more!

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.