Water / Wastewater Modeller - (Senior / Principal)

Water Hydraulic Modeller – Egis – UK

Catchment Management | Flood Risk Management | Sustainable Infrastructure/ Non-infrastructure

Shape the Future of Water Infrastructure with Egis

• London | Bristol | Manchester (Hybrid)
• Hydraulic Modelling and Civil Design | UK‑Wide Impact | High‑Growth Environment

Egis is expanding rapidly in the UK, backed by a global team of more than 22,000 experts across 100+ countries. We design and deliver intelligent, sustainable infrastructure to address climate challenges and strengthen community resilience. As part of our fast‑growing UK Water team, you will join an agile environment where progression is quick, visibility is high, and your impact is immediate.

In the UK we're proud to be delivering some of the most iconic projects which help connect people, protect our environment and meet emission reduction targets. From motorways to tramways, nuclear power plants to smart cities, clients choose us to help them solve their most complex challenges - delivering climate-responsible growth that meets the needs of communities, industry and the planet.​

Are you ready to be a key member of our Water team, driving growth, innovation and sustainability in the UK Water Sector?

About the Role

The UK water sector is entering a period of unprecedented investment and transformation. As Egis accelerates the growth of its Water Business in the UK, we are building a high-performing Civil Engineering and Hydraulic Modelling team to help shape this next chapter.

We are inviting expressions of interest from talented civil engineers and hydraulic modellers at all levels, from Consultant through to Associate Director, who want to play a meaningful role in delivering major water and wastewater programmes. Working within a collaborative, multidisciplinary environment, you will contribute to technically robust, sustainable and innovative treatment solutions across nationally significant projects.

This is a rare opportunity to join at a key stage of our UK growth journey, helping to establish, shape and expand a water hydraulic modelling capability built on Egis’ global infrastructure expertise and long-term commitment to the sector.

Key Responsibilities

• Work with our teams across the UK, Ireland and France to develop and deliver a range of hydraulic modelling services to our clients
• Provide technical and expert advice to clients, manage and deliver projects
• Support business development opportunities, contribution to tenders and proposals,
• Develop and maintain relationships with clients, partners and stakeholders
• Collaborate with wider Egis teams to develop market leading and innovative services to our clients
• Participate in industry events, seminars and conferences. Showcase Egis technical capability and project experience.

Areas of Past Experience

• Experience developing, verifying/calibrating and checking 1D and 2D hydraulic models
• Knowledge of working with integrated models (network/open channel/surface) and modelling to support DAPs
• Good understanding of hydrological assessment and analysis
• Flood risk modelling, assessments and mapping
• Interest in and knowledge of water quality models, which could include physio-chemical, biological, bacterial or chemical
• Experience using standard industry software in the UK e.g. InfoWorks ICM, Flood Modeller, HEC-RAS, TUFLOW, MIKE, Delft3D, SIMCAT

Key Attributes

• Hands on, delivery and client focused
• Energised with a positive and strong work ethic
• Excellent interpersonal, communication and presentation skills
• Ability to work in multi-disciplinary and remote teams
• Innovative mindset, always looking to improve, automate, streamline, learn and develop

Qualifications

• BSc/Eng or MSc/Eng in Civil, Water or Environmental Engineering disciplines
• 5-10 years of experience
• Obtained or near to obtaining professional qualification with CIWEM or similar.
• Demonstrable client, contractor or consultancy experience in UK Water Sector
• Demonstrable knowledge of regulator (e.g. Environment Agency), modelling requirements and technical standards
• Knowledge of scripting / automation (e.g. Python, Ruby etc) advantageous

Please note that you must have the right to work in the UK to be considered for this position.

What’s in It for You?

• An exciting new growth role in a fast‑organic growing UK business, offering clear and accelerated career progression
• Top Employers 2025 - Egis recognised across four continents for excellence in HR practices, having been awarded the prestigious Top Employer 2025 certification. Top Employers Institute is the global authority on recognising excellence in people practices.  
• A global leader in green infrastructure - we’re proud to lead the way in sustainable infrastructure, mobility and energy, innovating across the entire value chain and every aspect of the built environment.
• Highly competitive reward package
• Hybrid and flexible working
• 26+ days annual leave plus bank holidays
• Professional development, chartership support & global mobility
• Supportive, inclusive culture driven by sustainability and long‑term community impact

Ready to Lead?

Join Egis and play a pivotal role in shaping the future of sustainable water infrastructure across the UK.We are committed to our planet

In each project we design, engineer and operate we care deeply about the legacy we’re leaving behind. As part of our team, you’ll have a unique opportunity to use your skills and expertise to shape a better future for our communities in the UK, and all around the globe.

Our commitment is translated in the work carried out by our Egis Foundation, which funds concrete actions to address the climate crisis and is focused on educational and social initiatives that will help in the responsible and sustainable shift towards a sustainable world.

We are an Equal Opportunities employer and we strive to build a workforce that truly reflects the communities we represent. We welcome candidates from all backgrounds, regardless of age, disability, gender, gender identity, gender expression, race, religion or belief, sexual orientation, socioeconomic background, and any other protected characteristic. If you decide to apply for an opportunity with us, your application will be assessed based purely on your experience, the essential and desirable criteria, and your suitability for the role. We value each and every one’s contribution as this builds our culture and means that if you work with us, you will be included, listened to, and respected.