Senior Clean Water; Hydraulic Modeller

Lead clean‑water modelling that protects communities

Tetra Tech’s Water Consultancy is seeking a Senior Clean Water Hydraulic Modeller to deliver modelling, calibration and analytical support across AMP8 and AMP9 programmes. You will construct and maintain hydraulic models (Info Works WS, Synergi Water or similar), lead optioneering and analysis studies, assure modelling quality and translate outputs into outline and detailed design inputs. Day‑to‑day you will manage modelling work streams, line‑manage team members, maintain client relationships and contribute to bids and process improvements for multi‑site, multi‑million‑pound programmes.

The role encompasses the development, calibration, and analysis of hydraulic models to support AMP8 and AMP9 programmes.

In the short term you will strengthen model reliability and evidence used to inform operational decisions. Over the medium term you will lead complex modelling packages, embed improved workflows and mentor colleagues. In the longer term you will shape modelling standards and digital practice across programmes, influence investment decisions that reduce supply risk and progress to principal or technical leadership roles.

• Hydraulic modelling leadership – Lead construction, calibration and verification of clean‑water models; translate results into pragmatic option appraisals and design inputs.
• Technical delivery & quality assurance – Ensure modelling outputs meet governance and client specifications, maintain traceable documentation and apply auditable QA processes.
• Team leadership & people development – Line‑manage and mentor modellers, plan workloads, drive performance and promote continuous improvement.
• Commercial & programme management – Own forecasting, resource planning and commercial performance for modelling packages and support bid development.
• Digital & data proficiency – Advanced Excel and scripting capability desirable; experience with GIS (Map Info, ArcGIS, QGIS) and tools to automate workflows and enhance data quality.

Expected: degree in a relevant technical discipline. Desirable: postgraduate study, chartership or working towards it, and professional affiliation (CIWEM, ICE, IWater).

Hybrid working with regional offices across the UK; regular client and site visits may be required. Flexible arrangements considered to support delivery and collaboration.

Tetra Tech is a leading provider of consulting and engineering services working across the full project lifecycle worldwide. We have a wide range of expertise across our teams, providing a global support network with a personalised approach to client relationships to better understand where we can add value. We provide a collaborative environment that supports individual performance, innovation, and creativity.

We support public and private sector clients on local, national, and international projects to deliver sustainable and resilient solutions. Our operations in the UK, Ireland, and the Netherlands include more than 6,000 employees who Leading with Science® to solve our clients’ most complex problems.

In alignment with the Equality Act 2010, we will make reasonable adjustments to support candidates and employees requiring additional arrangements. This could include adaptations to work schedules, training approaches, or the physical workspace. Please inform us if you need any accommodations during the recruitment process or in your day‑to‑day role.

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