Job Title: Senior Process Commissioning Engineer Salary: £500-£530 per day (CIS, Inside IR35) Location: Wessex region (on-site) Type: Contract | 12 months | On-site About the Role: Our client is seeking a Senior Process Commissioning Engineer to deliver successful commissioning of wastewater capital projects across the Wessex region. You'll provide technical expertise from design through to construction, and lead projects into operation with a focus on optimisation, reliability, and compliance. Key workstreams during AMP8 will involve Phosphorus Removal schemes (often with tertiary solids removal, capital maintenance, and new process stages), plus several larger non-P schemes. You'll also support the Asset Commissioning Manager with staff development and team strategy. Key Responsibilities: Provide technical input during project design and construction. Support Commissioning Engineers with technical queries. Attend design reviews and HAZOPs. Deliver process risk assessments for construction activities. Undertake software FATs and SATs. Commission new process units and optimise performance. Carry out process and mechanical reliability testing. Drive projects through to successful commissioning. What Our Client is Looking For: 10 years' wastewater process project experience, with at least 5 years in the UK/European water industry. Degree-level qualification in a relevant scientific or engineering field. Chartered status (highly beneficial). Ability to work independently and take initiative. Strong facilitation, interpersonal, and communication skills. Detail-oriented with excellent problem-solving ability. If you would like to learn more about this opportunity, please reach out to Charlie Knight @ Advance TRS. We are an equal opportunity employer and value diversity in our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status