Principal Hydraulic ModellerUK Flexible LocationSalary: £60,000 - £75,000Are you a Principal Hydraulic Modeller ready to lead major modelling projects and shape technical direction across a high-performing water team?This Principal Hydraulic Modeller opportunity is with a leading consultancy that values technical excellence, trusted leadership and flexible working. The Principal Hydraulic Modeller will play a key role in delivering wastewater and surface water projects across the UK, supporting clients with integrated catchment modelling, network performance and practical asset strategies. For an experienced Principal Hydraulic Modeller, this is a strong opportunity to influence delivery, support team development and build client relationships.Key responsibilities Lead wastewater and surface water modelling projects from scope to completion Build, review and approve ICM or InfoWorks models in 1D and 2D Interpret outputs and develop practical, cost-effective solutions Oversee surveys, data collection and technical QA processes Manage budgets, resources and programme delivery Mentor senior and junior engineers within the team Support client meetings, proposals and framework development Maintain strong health and safety and quality standardsCandidate requirements Degree in Civil Engineering, Environmental Science or similar Extensive experience in wastewater hydraulic modelling Advanced knowledge of ICM or InfoWorks Strong experience leading teams and reviewing technical deliver