Mid To Principal Wastewater Modeller

Advance TRS; Bristol; On-site; GBP 45,000 - 60,000; Full time

Job summary

A leading engineering consultancy in the UK is seeking a Mid-Principal Wastewater Modeller to deliver and lead wastewater network modelling projects. Candidates should have a minimum of three years' experience and strong technical skills in InfoWorks ICM. The role offers a flexible salary package, hybrid working opportunities, and professional development support.

Benefits

Flexible salary package

Professional development support

Inclusive team culture

Qualifications

• Minimum 3 years' experience in wastewater modelling or related hydraulic modelling roles.
• Strong technical skills in InfoWorks ICM.
• Experience supporting or delivering water company modelling frameworks.

Responsibilities

• Developing and calibrating InfoWorks ICM wastewater network models.
• Completing hydraulic assessments including flooding and pollution risk evaluations.
• Delivering technical reports and drainage area plans.

Skills

Wastewater modelling

Hydraulic modelling

Analytical skills

Communication skills

Team collaboration

Leadership

Tools

InfoWorks ICM

GIS

Python

SQL

SWMM

Job description

Mid-Principal Wastewater Modeller

Type: Permanent | Hybrid (office/home)

Eligibility

Applicants must have the permanent and unrestricted right to work in the UK. Our client cannot offer or support visa sponsorship at this time or in the future. Please do not apply if you require sponsorship, as applications will be rejected.

About the Role

Our client is seeking experienced Wastewater Modellers with a minimum of three years' professional experience to support and lead the delivery of wastewater network modelling projects across the UK water sector. The role is open at Mid-Level, Senior, and Principal grades, with responsibilities scaled to experience. You will work on wastewater network modelling, hydraulic assessments, drainage strategies, optioneering, and catchment planning for major UK water industry programmes.

Key Responsibilities

• Developing, verifying, and calibrating InfoWorks ICM wastewater network models.
• Completing hydraulic assessments including capacity, flooding, CSO performance, and pollution risk evaluations.
• Delivering drainage area plans, catchment studies, integrated urban drainage assessments, and technical reports.
• Leading modelling tasks, project teams, and multi-disciplinary project delivery (Senior/Principal).
• Managing scopes, schedules, budgets, and technical quality.
• Supporting client engagement, bid writing, and framework delivery (Senior/Principal).

What Our Client is Looking For

• Minimum 3 years' experience in wastewater modelling or related hydraulic modelling roles.
• Strong technical skills in InfoWorks ICM (GIS, Python, SQL, or SWMM an advantage).
• Experience supporting or delivering water company modelling frameworks.
• Excellent analytical, communication, and report-writing skills.
• Ability to work collaboratively within technical and multi-disciplinary teams.
• Demonstrated leadership or task management experience for Senior/Principal grades.

What Our Client Offers

• Flexible salary package based on experience.
• Hybrid working and offices across the UK.
• Support for professional development and Chartership (ICE, CIWEM, etc.).
• Opportunity to work on high-profile UK water industry projects.
• A supportive and inclusive team culture.

Opportunity for Growth

This role offers a clear progression pathway from Mid-Level through to Principal, including opportunities to lead teams, take on project management responsibilities, shape technical delivery, and support framework growth across the UK water sector.

Equal Opportunity Statement

We are an equal opportunity employer and value diversity in our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.