Location
London

Hours
Full Time

Salary
Negotiable

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

Our Water Management team is seeking a Senior Wastewater Modeller to develop wastewater models, manage key project aspects, and engage strategically with clients to grow Arcadis’s project portfolio. Collaboration, proactive problem-solving, and creative thinking are central to this role.

Our Water team leads some of the UK’s most technically demanding projects and AMP8 programmes, working closely with water companies and contractors to deliver innovative solutions addressing flooding, storm overflow pollution, and network resilience while ensuring compliance with UK regulations such as WINEP.

This role is ideal for a motivated, independent professional seeking career progression and the opportunity to mentor others. You will take a leadership role in client engagement, ensuring technical deliverables meet expectations and fostering ongoing collaboration and growth.

Key responsibilities include delivering wastewater infrastructure and non-infrastructure modelling projects, conducting technical reviews, overseeing model build and verification, managing surveys, developing strategic flood mitigation solutions, supporting design stages, reviewing technical reports, resolving modelling challenges, ensuring compliance with standards, collaborating with clients and multidisciplinary teams, supporting junior staff, assisting with bid preparation, coordinating project resources and quality assurance, and liaising with project leadership to ensure progress.

Fostering a collaborative environment and supporting professional development for yourself and your team will be fundamental to your success in this role.

Experience
- Advanced expertise in hydraulic modelling for wastewater infrastructure and non-infrastructure projects
- Proven experience in model quality assurance procedures
- Skilled in team and stakeholder coordination and management
- Strong report-writing skills
- Experience with InfoWorks ICM; HADES knowledge advantageous
- Competent in relevant GIS software packages
- Coding experience desirable

About you
- Motivated and independent professional with leadership capabilities
- Strong client engagement and communication skills
- Collaborative team player who supports and mentors junior colleagues
- Proactive problem solver with creative thinking abilities

Qualifications
- Chartered membership of a relevant professional institution desirable (e.g., ICE or CIWEM)
- Advanced abilities in spreadsheet-based data analysis