An opportunity is available for a Principal/Associate Wastewater Hydraulic Modeller to join a well-established multidisciplinary water team delivering infrastructure and environmental solutions across the UK and internationally. The team works on a broad portfolio of projects including wastewater networks, drainage design, SuDS, and surface water management for water utilities, local authorities, transport authorities, and private developers. Responsibilities of Principal Wastewater Hydraulic Modeller: * Lead hydraulic modelling studies including model build, maintenance, calibration, and verification. * Support the delivery of storm overflow reduction, flood alleviation, and environmental improvement schemes. * Develop wastewater catchment strategies and associated infrastructure solutions. * Ensure technical quality, compliance with relevant standards, and high-quality project outputs. * Work closely with project managers to deliver programmes of work effectively. * Contribute to bid preparation, including technical inputs and cost estimates. * Mentor and support junior staff while encouraging professional development. * Participate in technical innovation and continuous improvement initiatives. Requirements for Principal Wastewater Hydraulic Modeller: * Understanding of UK Water Industry and regulatory issues. * ...