Principal Wastewater Modeller - Major UK Consultancy: An established UK-based engineering and environmental consultancy is seeking a Principal Wastewater Modeller to support the growth and delivery of projects across London and the surrounding regions. Thanks to long-term partnerships and recent success in securing new frameworks, the business is expanding its water modelling capabilities. With a strong pipeline of work across the UK and Ireland, this role offers the opportunity to be part of a collaborative and forward-thinking team, delivering vital infrastructure improvements. You'll work as part of a multidisciplinary group of specialists embedded across several UK locations, supported by additional resources from overseas. The team partners with both public and private sector clients, helping deliver urban drainage and wastewater projects that meet today's sustainability and resilience challenges. In this senior technical role, you'll provide leadership and mentoring within the modelling team, contribute to project planning and delivery, and help uphold best practices and governance standards across projects. Your input will shape both project outcomes and the development of junior team members. Key benefits include: Private medical insurance Group income protection and life assurance Green car salary sacrifice scheme Annual bonus structure 25 days' holiday (plus option to buy more) Strong employer pension contribution This is an excellent opportunity to join a consultancy with a strong reputation in the water sector and a focus on technical excellence and career development. To find out more, click apply or contact Jamie Will at Calibre Search. Calibre Search promote equality in the workplace and we welcome applications from all suitably skilled or qualified candidates regardless of their sex, race, disability, religion/beliefs, sexual orientation or age. We act as both an employment agency and employment business.