Senior Process Design Engineer Water & Wastewater Treatment Derby based (4 days on site, 1 day remote which will need to be either Tuesdays or Thursdays) Inside IR35 12 Month Contract About the Role We are seeking an experienced and commercially aware Senior Process Design Engineer to join our Capital Delivery team. This is a key technical leadership role responsible for driving process excellence across a portfolio of water, wastewater, and sludge treatment projects from concept through to completion. You will play a critical role in ensuring the optimum process solutions are selected and developed, balancing whole-life cost, operational performance, low-carbon outcomes, and environmental compliance. Working collaboratively with multidisciplinary teams, operational stakeholders, regulators, and external specialists, you will lead process design activities through early project development and support successful project delivery. This is an exciting opportunity for a technically stro...