Wastewater Hydraulic Modeller

Wastewater Hydraulic Modeller Location: Hybrid – Reading (Sewer Treatment Works), RG2 0RP Salary: £45,940 to £68,000 per annum (dependent on experience) Contract Type: Full-time, Permanent Division: Asset Operations & Capital Delivery Ref: JF3459 Closing Date: 12/11/2025 About the Role UnifyHQ is proud to be working in partnership with our client, a leading UK water and wastewater provider, to recruit an experienced Wastewater Hydraulic Modeller. This is a key opportunity to contribute to nationally significant programmes including the Water Industry National Environment Programme (WINEP) and Drainage and Wastewater Management Plans (DWMP). You’ll lead the development and calibration of Integrated Catchment Models (ICM), manage field investigations, and drive solution development to support environmental resilience and network performance. The role offers a blend of technical delivery, project management, and strategic input across high-impact infrastructure programmes. Key Responsibilities

• Lead the review, update, and calibration of complex ICM models using diverse data sources
• Plan and oversee flow surveys, asset investigations, and field data collection
• Use modelling insights to support optioneering and strategic solution development
• Manage end-to-end delivery of modelling programmes, ensuring quality, budget, and stakeholder alignment
• Communicate technical findings clearly to both technical and non-technical audiences
• Collaborate across multi-disciplinary teams to deliver robust, data-driven outcomes

Candidate Profile

• Degree or professional qualification in Civil/Environmental Engineering, Hydrology, or related discipline
• Advanced proficiency in ICM modelling software with a track record of complex model development
• Experience working for or on behalf of a water or sewerage undertaker
• Strong understanding of wastewater network assets and operational challenges
• Excellent report writing and numerical analysis skills
• Proactive, collaborative, and capable of independent decision-making

Desirable Experience

• Experience supporting regulatory investigations under SOAF, INV4, WINEP, or DWMP frameworks
• Technical leadership and mentoring of junior modellers
• Familiarity with compliance requirements and environmental planning standards

What’s on Offer

• Competitive salary from £45,940 to £68,000 depending on experience
• 26 days annual leave (plus bank holidays), rising to 30 with service
• Performance-related pay linked to individual and company targets
• Generous pension scheme via AON
• Health and wellbeing benefits including annual health MOTs, physiotherapy, counselling, Cycle to Work scheme, shopping discounts, and life assurance

About Our Client Our client is the UK’s largest water and wastewater provider, serving over 16 million customers. Their mission is to build a better future for people, communities, and the environment through sustainable infrastructure and innovation. They offer a collaborative and inclusive working environment, with meaningful career development and the chance to make a real impact. To Apply: If you have the relevant experience and skills, we encourage you to apply by sending your CV. Application Process: Interested candidates should submit a CV and a covering letter detailing their experience and suitability for the role to James Feeley, Department Lead at Unify Renewables. If you have the skill set and are interested in being put forward for this new and exciting position, then please forward your CV immediately. Unify HQ Limited is acting as an Employment Business in relation to this vacancy. If your experience matches, please forward your CV immediately. We thank all applicants who respond, but only those shortlisted will be contacted