Principal Modeller​/Hydrologist

Position: Principal Modeller / Hydrologist
Principal Hydraulic Modeller / Hydrologist - Flood Risk & Catchment Modelling

Role Overview

We are seeking a Principal Modeller / Hydrologist to provide technical leadership across a portfolio of flood risk and water environment projects in the UK. This role will focus on the development, verification and application of advanced hydraulic and hydrological models to support flood alleviation schemes, river restoration, drainage strategies and flood risk mapping programmes.

You will lead modelling strategy, guide technical direction across projects and mentor junior staff, while working closely with engineers, environmental specialists and clients to deliver resilient, sustainable flood risk management solutions.

Key Responsibilities

Lead the development, checking and verification of hydraulic models using platforms such as Flood Modeller, TUFLOW, HEC-RAS and Info Works ICM

Deliver modelling outputs in support of:

Flood alleviation schemes

Flood risk assessments and drainage strategies

River restoration and watercourse improvement projects

Flood mapping and asset planning programmes

Lead the estimation of flood flows using established methodologies within the Flood Estimation Handbook (FEH)

Scope and conceptualise modelling and hydrological approaches, identifying risks, limitations and opportunities at project outset

Produce and technically review high-quality reports, clearly documenting assumptions, uncertainties and modelling limitations

Provide technical leadership during tendering, contributing to bids ranging from one-off commissions through to multi-million-pound frameworks

Mentor and develop junior team members, supporting professional growth and technical capability

Build strong working relationships with clients and multi-disciplinary project teams

Maintain awareness of evolving legislation, guidance and industry best practice affecting flood risk and modelling services

Manage delivery using internal project management systems to achieve quality, programme and budget targets

Collaborate closely with engineers and environmental specialists to deliver fluvial, coastal, surface water and drainage flood risk projects

Candidate Profile

Degree in Hydrology, Civil Engineering, Environmental Science or a related discipline

Significant experience delivering hydraulic and hydrological modelling within flood risk or water environment projects

Expert user of Flood Modeller, TUFLOW, HEC-RAS and/or Info Works ICM

Strong knowledge of FEH flood flow estimation methodologies

Proven ability to lead technical delivery, review complex models and produce high-quality reports

Experience supporting bids and framework delivery environments

Comfortable mentoring junior staff and acting as a technical authority

Excellent communication skills with the ability to translate modelling outputs into clear, actionable advice

This role offers the opportunity to shape major flood risk management and water environment programmes while acting as a senior technical leader within a multidisciplinary delivery team.

Contract - 6 Month Initial
-Inside IR35