Lead Wastewater Network Modeller

Poutrix; Greater London; Hybrid; GBP 70,000 - 95,000; Full time

Job summary

Arcadis is seeking a Principal Wastewater Modeller in London to lead advanced hydraulic modelling across wastewater projects, coordinate with water utilities, and help expand opportunities with strategic clients. The role emphasizes collaboration, problem-solving, and delivering compliant, high-quality outputs.

You will mentor junior colleagues, oversee model build and verification, and interface with stakeholders to drive project success within AMP8 programs and UK regulatory frameworks.

Qualifications

• Advanced expertise in hydraulic modelling for wastewater infrastructure and non-infrastructure projects.
• Strong team and stakeholder coordination and management.
• Proficient in InfoWorks ICM; GIS knowledge advantageous; coding desirable.

Responsibilities

• Deliver wastewater infrastructure and non-infrastructure modelling projects, managing tasks of various scales.
• Conduct technical reviews of wastewater models; oversee model build and verification of sewer networks; develop survey specs.
• Provide support to designers at concept and detailed design stages.
• Review and enhance technical reports and presentations to high quality standards.
• Coordinate project elements, manage resource allocation, QA, subcontractor interactions, and client feedback.
• Mentor junior team members and support professional development.

Skills

Hydraulic modelling

Team coordination

InfoWorks ICM

HADES knowledge

GIS software

Chartered ICE/CIWEM

QA procedures

Report writing

Spreadsheet analysis

Coding (desirable)

Education

Chartered member of ICE or CIWEM

Tools

InfoWorks ICM

GIS software

Job description

Arcadis is seeking a Principal Wastewater Modeller in London to lead advanced hydraulic modelling across wastewater projects, coordinate with water utilities, and help expand opportunities with strategic clients. The role emphasizes collaboration, problem-solving, and delivering compliant, high-quality outputs.

You will mentor junior colleagues, oversee model build and verification, and interface with stakeholders to drive project success within AMP8 programs and UK regulatory frameworks.