We are seeking a Senior Mechanical Design Engineer to play a leading role within our Design Team, taking technical ownership of mechanical engineering solutions across a wide range of water and wastewater treatment projects. In this role, you will guide the full design process from concept through to completion, ensuring every mechanical system meets regulatory, safety, and client requirements while maintaining high standards of efficiency and sustainability. You will collaborate closely with multidisciplinary teams to deliver fully integrated designs, oversee technical reviews and risk assessments, and provide expert support during procurement, installation, and commissioning. Acting as a mentor to junior engineers, you will help shape the future capability of the team while championing innovation, quality, and best practice across the business. Please note that this role requires you to be in the office or on site at least 3 times a week. About Browne (Non - Infrastructure) At Browne, we are engineering with purpose.We are a leading UK contractor delivering specialist engineering, construction and maintenance services across the water, wastewater and civil engineering sectors. From building pipelines and upgrading pumping stations to delivering complex mechanical, electrical, instrumentation, control and automation (MEICA) solutions, we help provide cleaner water, stronger infrastructure and more reliable services for communities across the UK.Our expertise spans the full ..... full job details .....