Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets. We are more than 36,000 people, in over 70 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.
Role description
Our Water Management team is seeking a Principal Wastewater Modeller. In this position, you will lead the development of wastewater models, manage key project aspects, and work closely with clients to build and expand Arcadis’s project portfolio through strategic client interactions. Collaboration, proactive problem‑solving, and creative thinking are central to our team’s approach and will be a fundamental part of your role. Our Water team tackles some of 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 while ensuring compliance with UK regulatory requirements such as WINEP and industry best practices. The role offers an opportunity for a motivated and independent professional to advance their career while mentoring and nurturing the development of others, taking a leadership position in client engagement and management, especially with water utilities.
Role accountabilities
* 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, oversee survey specifications and management, 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 on projects and contribute to advancing the team’s technical expertise.
* Ensure project components, including reports, drawings, specifications, and studies, comply with relevant standards and project 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 actively supporting the professional development of both yourself and your team, guiding junior members to reach their full potential.
Qualifications & Experience
* Advanced expertise in hydraulic modelling for wastewater infrastructure and non‑infrastructure projects.
* Skilled in team and stakeholder coordination and management.
* Proficient in InfoWorks ICM.
* HADES knowledge would be advantageous.
* Competent in using relevant GIS software packages.
* Chartered member of a relevant professional institution (e.g., ICE or CIWEM).
* Proven experience in model quality assurance procedures.
* Strong report‑writing skills.
* Advanced abilities in spreadsheet‑based data analysis.
* Coding experience desirable.
Equal Employment Opportunity
We want you to be able to bring your best self to work every day. We take equality and inclusion seriously and hold ourselves to account for our actions. 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.
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