Senior Wastewater Modeller & Client Leader

Arcadis; Plymouth; On-site; GBP 65,000 - 90,000; Full time

Job summary

Arcadis is seeking a Principal Wastewater Modeller within its Water Management team in the UK. You will lead wastewater model development, manage project aspects, and work with clients to expand Arcadis’s portfolio through strategic engagement.

The role emphasizes collaboration, problem solving, and mentoring to grow technical excellence across projects. Our Water team tackles AMP8 challenges, focusing on flooding, CSO reduction, network resilience, and regulatory compliance, delivering

Qualifications

• Advanced expertise in hydraulic modelling for wastewater projects.
• Experience in coordinating teams and stakeholders.
• Proficient in InfoWorks ICM.
• HADES knowledge would be advantageous.
• Competent in GIS software packages.
• Chartered member of ICE or CIWEM.
• Proven experience in model quality assurance procedures.
• Strong report-writing skills.
• Advanced abilities in spreadsheet-based data analysis.
• Coding experience desirable.

Responsibilities

• Lead development of wastewater models and manage key project aspects.
• Review and verify sewer network models and survey specifications.
• Provide support to designers at concept outline and detailed design stages.
• Review technical reports and presentations to maintain high quality.
• Resolve modelling challenges and advance team expertise.
• Ensure all project outputs comply with standards and requirements.
• Engage with clients to explain model outputs and foster collaboration.
• Mentor junior team members and support professional development.
• Assist with bids including narratives, cost estimates and programmes.
• Coordinate resources, QA, subcontractor interactions and client feedback.
• Collaborate with specialists across disciplines to ensure project integrity.

Skills

Hydraulic modelling

Team & stakeholder coordination

Report writing

Spreadsheet data analysis

Coding experience

Model QA procedures

Education

Chartered member of ICE or CIWEM

Tools

InfoWorks ICM

GIS software

HADES knowledge

Job description

Arcadis is seeking a Principal Wastewater Modeller within its Water Management team in the UK. You will lead wastewater model development, manage project aspects, and work with clients to expand Arcadis’s portfolio through strategic engagement.

The role emphasizes collaboration, problem solving, and mentoring to grow technical excellence across projects. Our Water team tackles AMP8 challenges, focusing on flooding, CSO reduction, network resilience, and regulatory compliance, delivering