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About the Role
As a Principal Clean Water Modeller, you will provide technical leadership in the development and application of clean water distribution network models. You will support planning, resilience, operational strategy, and capital delivery projects, leading the quality and assurance of modelling outputs. Working closely with clients and internal teams, you will define robust, fit-for-purpose modelling approaches that support sustainable outcomes and Arcadis’ purpose of improving quality of life.
Responsibilities
- Act as technical lead for clean water modelling commissions, defining modelling strategies and ensuring outputs are fit for purpose.
- Provide independent technical assurance, model reviews, and sign-off of deliverables with clear audit trails.
- Develop and promote best practice, guidance, and standard templates across the modelling community.
- Build, update, and maintain clean water network models (steady-state and extended period simulation).
- Undertake demand allocation, asset representation (pumps, PRVs, reservoirs, tanks), and operational control logic.
- Carry out calibration and validation against flow, pressure, and level data.
- Deliver scenario modelling to support growth, resilience, outage planning, pressure management, leakage reduction, and investment planning.
- Ensure compliance with client modelling specifications and water company standards.
- Maintain rigorous documentation, change control, and model development records.
- Lead technical discussions with clients, clearly explaining assumptions, limitations, and results.
- Support scope definition, data strategy, and confidence assessment at project inception.
- Mentor and develop junior and senior modellers, supporting technical excellence and capability growth.
- Contribute to resource planning, task leadership, and a collaborative team culture.
- Support bids and proposals, including defining modelling methodologies, scope, programme, and fee inputs.
Requirements
- Degree (or equivalent experience) in Civil Engineering, Water Engineering, Environmental Engineering, or a related discipline.
- Significant experience in clean water distribution network modelling within consultancy or water company environments.
- Strong understanding of water distribution hydraulics and operational behaviour.
- Proven ability to produce high-quality technical documentation and QA records.
- Chartered (or working towards chartership) with a relevant professional institution (e.g. ICE, CIWEM).
- Experience with water quality modelling concepts (e.g. water age, chlorine decay).
- Experience developing automation, QA tools, or advanced GIS/data workflows.
Skills
- Clean water modelling software (e.g. InfoWorks WS Pro, Synergi Water, EPANET)
- GIS platforms (ArcGIS / QGIS)
- Data analysis and reporting tools (Excel, Python, databases)
Experience Level
- Principal
Education Level
- Degree
About the Company
- Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets.
- We are more than 34,000 people, in over 30 countries, dedicated to improving quality of life.
- Everyone has an important role to play.
- With the power of many curious minds, together we can solve the world’s most complex challenges and deliver more impact together.
- We can only achieve our goals when everyone is empowered to be their best.
- We believe everyone's contribution matters.
- It’s why we are pioneering a skills-based approach, where you can harness your unique experience and expertise to carve your career path and maximize the impact we can make together.
- You’ll do meaningful work, and no matter what role, you’ll be helping to deliver sustainable solutions for a more prosperous planet.
- Make your mark, on your career, your colleagues, your clients, your life and the world around you.
- Together, we can create a lasting legacy.
- Join Arcadis. Create a Legacy.
Equal Opportunity
- We want you to be able to bring your best self to work every day which is why we take equality and inclusion seriously and hold ourselves to account for our actions.
- Our ambition is to be an employer of choice and provide a great place to work for all our people.
- We believe that by working together diverse people with different experiences develop the most innovative ideas.
- Equality, diversity and inclusion is at the heart of how we improve quality of life and we work closely with our people across six ED&I Workstreams: Age, Disability, Faith, Gender, LGBT+ and Race.
- A diverse and skilled workforce is essential to our success.