Senior Wastewater Modeller

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Arcadis is the world’s leading company delivering sustainable design, engineering and consultancy solutions for natural and built assets. With more than 36,000 people in over 70 countries, we are committed to improving quality of life and tackling the world’s most complex challenges together.

Our Water Management team is seeking a Senior Wastewater Modeller. In this position you will develop wastewater models, manage key project aspects, and work closely with clients to expand Arcadis’s project portfolio through strategic client interactions. Collaboration, proactive problem‑solving and creative thinking are central to our approach and a fundamental part of your role.

Our Water team tackles the UK’s most technically demanding projects and AMP8 programmes, working in partnership with leading water companies and contractors to deliver innovative solutions. Projects focus on addressing flooding challenges, reducing storm overflow pollution and improving network resilience, all while ensuring compliance with UK regulatory requirements such as WINEP and industry best practices.

This role is ideal for a motivated and independent professional seeking career growth while mentoring and nurturing others. You will take a leadership position in client engagement, ensuring technical deliverables meet expectations and fostering opportunities for continued collaboration and growth.

• Deliver a range of wastewater infrastructure and non‑infrastructure modelling projects, effectively managing tasks of various scales.
• Conduct technical reviews of wastewater models, oversee model build and verification of sewer networks, and develop strategic solutions to mitigate flooding and reduce CSO spills.
• Provide support to designers at concept outline and detailed design stages.
• Review and enhance technical reports and presentations to uphold high‑quality standards.
• Resolve technical modelling challenges and contribute to advancing the team’s expertise.
• Ensure project components – reports, drawings, specifications and studies – comply with relevant standards and requirements.
• Collaborate closely with clients, providing clear explanations and ensuring they understand model outputs and processes.
• Support and guide junior team members, fostering a collaborative and supportive work environment.
• Assist with preparation of bids, including narratives, cost estimates and programmes.
• Coordinate project elements, managing resource allocation, quality assurance, subcontractor interactions and client feedback.
• Work alongside specialists from other engineering and environmental disciplines to ensure project integrity.
• Liaise effectively with the Project Director or Manager and the client to support project progress.
• Foster a collaborative work environment by supporting the professional development of yourself and the team.

• Advanced expertise in hydraulic modelling for a range of wastewater infrastructure and non‑infrastructure projects.
• Skilled in team and stakeholder coordination and management.
• Proficient in Info Works ICM.
• HADES knowledge is advantageous.
• Competent in using relevant GIS software packages.
• Chartered membership of a relevant professional institution (e.g., ICE or CIWEM) is desirable.
• Proven experience in model quality assurance procedures.
• Strong report‑writing skills.
• Advanced abilities in spreadsheet‑based data analysis.
• Desirable coding experience.

We can only achieve our goals when everyone is empowered to be their best. It’s why we are pioneering a skills‑based approach, allowing you to 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 help deliver sustainable solutions for a prosperous future.

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 people. We believe that diverse teams create innovative ideas. Equality, diversity and inclusion is at the heart of how we improve quality of life and we work closely with all our people.

Mid‑Senior level

Full‑time

Other

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