Graduate
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Graduate Hydraulic Modeller / Engineer (Water Utilities) - Cardiff

Arup
Competitive
Cardiff

Expected closing date: Friday, 18 December 2026

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TL;DR

Key Takeaways

  • Develop practical skills in hydraulic modelling, catchment analysis, spatial data, technical reporting and collaborative project delivery.
  • Requires a bachelor’s degree or higher in a relevant numerical or environmental discipline.
  • Must have full working rights in the UK and no more than 12 months of full-time experience in a comparable role.
  • The advert closes on 18 December 2026, with an early application recommended.
  • Start date is 1 September 2027.

About the Role

Our vision is to restore and regenerate the health of our rivers and coastlines. As a team, we deliver resilient clean water and wastewater infrastructure solutions for clients across the UK and internationally.

From day one, you will be part of an integrated team. Our team of engineers, hydraulic modellers, and environmental scientists brings together diverse expertise to tackle complex challenges and create brilliant solutions. You will develop practical skills in hydraulic modelling, catchment analysis, spatial data, technical reporting and collaborative project delivery. You will be supported by experienced specialists and given opportunities to contribute ideas, present your work and build experience towards professional membership.

Our work ranges from small-scale civil engineering projects to novel nature-based solutions and major infrastructure programmes of national significance. You'll be supported by a local network of technical specialists who work together to deliver meaningful, high-impact projects.

Key Responsibilities:

  • Analysis and problem solving: Assessing large datasets, gap analysis and scoping future investigation needs. This can include historic drawings, surveys, catchment information, hydraulic models, reports. You will work with a variety of Contractors to specify and manage surveys, including site visits.
  • Hydraulic modelling and solution development: Develop hydraulic models which represent urban drainage systems, rivers and coasts assessing flow and water quality. You will be supported in technical delivery with a multi-disciplinary team, including bespoke modelling training, hands on job support, software and technical guidance. Contribute to solutions that improve river health, reduce flood risk and provide future infrastructure resilience. We promote a culture of learning and sharing, in a safe and supportive environment.
  • Collaboration: Communication and collaboration internally and externally. Presenting and sharing your work, participating in reviewing and challenging our own designs. We want to hear everyone’s views, in an open and collaborative environment.
  • Safety, quality and excellence: You will be expected to keep good records of meetings, reports, workshops and technical reviews, data management, design decisions and technical outputs.
  • Continuous learning and curiosity: We will provide an environment for you to learn and be curious about new ideas, challenging each other in a supportive environment. You will be supported in working towards professional membership.

Qualifications and Experience:

  • A bachelor’s degree, or higher qualification, in a relevant subject such as Civil Engineering, Environmental Engineering, Earth Sciences, Geography, Geospatial Science, Mathematics, Applied Mathematics, Physics or a related numerical or environmental discipline.
  • Experience using GIS or working with spatial data.
  • Experience with, or an interest in developing skills in, Python, FME and hydraulic modelling software would be advantageous.

Eligibility Criteria:

  • Full working rights in the country of application.
  • No more than 12 months of full-time experience in a comparable role.
  • Recently graduated, or on track to graduate, from your most recent degree, related to your role of choice, before employment starts.

Core Attributes:

  • Changemakers: A passion for sustainable development and creating a better world is key.
  • Innovative minds: We’re looking for critical thinkers who embrace new ideas and challenge the status quo.
  • Growth seekers: You have a growth mindset, always eager to learn and explore new ways of working.
  • Adaptable adventurers: You’re ready to take on any challenge that comes your way.

Start Date:

You should be able to start this opportunity on 1 September 2027.

What We Offer:

  • A career in which all members can belong, grow and thrive.
  • Attractive total reward package.
  • Competitive, fair and equitable pay.
  • Benefits that support health and wellbeing.
  • A wide range of learning opportunities.
  • Possibilities to have an impact through the work they do.
  • Profit Share.
  • Flexible working approach.
  • Private medical insurance, Life assurance, Accident insurance and Income protection cover.
  • Access to flexible benefits.

Application Process:

The process includes an online application, psychometric testing, application review, case study, interview and offer stage. Early application is recommended as applications are reviewed as they're received.