Job Description

Job Title: Principal Clean Water Modeller
Salary: 60ph (dependent on experience)
Location: UK - Flexible / Hybrid Working
Type: Contract - 6-12 Months, Inside IR35

About the Role:
Our client is seeking an experienced Principal Clean Water Modeller to provide technical leadership across a range of clean water network modelling projects. The successful candidate will support planning, resilience, operational strategy, and capital delivery programmes, whilst ensuring high-quality modelling outputs and technical assurance standards are maintained.

This is an excellent opportunity to work on nationally significant water infrastructure projects within a highly collaborative and technically focused environment.

About the Client:
Our client is a leading engineering and infrastructure consultancy delivering sustainable solutions across the water, environment, and infrastructure sectors. They are recognised for delivering innovative, future-focused projects that improve resilience and operational performance across the UK water industry.

Key Responsibilities:
Lead clean water modelling commissions and define modelling strategies
Deliver technical assurance, model reviews, and sign-off of deliverables
Build, update, and maintain clean water network models
Carry out calibration and validation using flow, pressure, and level data
Deliver scenario modelling for growth, resilience, outage planning, leakage reduction, and investment planning
Ensure compliance with client specifications and water industry standards
Maintain accurate documentation, QA records, and change control processes
Lead technical discussions with stakeholders and clients
Mentor and support junior team members and modellers
Support bids, proposals, and modelling methodology development
What Our Client is Looking For:
Degree qualified in Civil Engineering, Water Engineering, Environmental Engineering, or similar
Significant experience in clean water distribution network modelling
Strong understanding of water distribution hydraulics and operational behaviour
Experience using modelling software such as InfoWorks WS Pro, Synergi Water, or EPANET
Strong technical reporting and QA experience
Excellent communication and stakeholder management skills
Desirable:

Chartered or working towards Chartership with ICE, CIWEM, or equivalent
Experience with water quality modelling concepts
Knowledge of GIS platforms, Python, or advanced data workflows
What Our Client Offers:
Flexible and hybrid working arrangements
Long-term contract opportunity
Exposure to high-profile UK water infrastructure projects
Collaborative and technically driven working environment
Opportunity to influence modelling standards and technical direction
Eligibility:
Candidates must have the right to work in the UK and be available to work on an Inside IR35 contract basis.

Opportunity for Growth:
This role offers the opportunity to work on complex and nationally important water infrastructure projects whilst developing leadership capability, technical influence, and mentoring experience within a highly respected consultancy environment.

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.