Job Description Start here. Grow here. Are you ready to shape the future of water infrastructure? We’re looking for a Senior Mechanical Engineer to join our growing Water Solutions team in St Albans, Croydon, or Basingstoke. In this role, you’ll support the delivery of Southern Water's £3.7 billion capital delivery programme, working on projects ranging from small rural sites to multi-million-pound schemes, covering both water and wastewater (Infrastructure and Non-Infrastructure). The frameworks run for seven and five years, respectively, with the option to extend for an additional 5 years. You’ll have the opportunity to contribute to two major frameworks as part of this investment: Strategic Delivery Partner (SDP) Framework: Supporting our Tier 1 Contractor on Lot 1 (non-infrastructure water projects) and Lot 2 (non-infrastructure wastewater projects). Low Complexity Delivery Route Lot 2 (Wastewater Infrastructure) Framework and Strategic Delivery Partner (SDP) Lot 3 Infrastructure Framework: Partnering exclusively with a Tier 1 contractor to deliver sustainable, high-quality water and wastewater solutions. Working flexibly from Southern UK locations, you’ll visit client sites in and around Brighton and collaborate with teams across multi-year frameworks. As part of our thriving business, you’ll take on rewarding multi-disciplinary projects from inception to delivery, creating innovative solutions that enhance the environment and improve communities. By joining AECOM, you’ll be provided with a comprehensive benefit package, including competitive pay, highly rated healthcare, a company pension, and a Sharesave scheme Here's what you'll do: Producing feasibility studies, outline design, detailed design and construction support. Producing design drawings, mechanical plant selection and specification. Liaising and collaborating with our water and other discipline teams including civil, electrical, process and mechanical engineers nationwide. Deliver a high calibre of technical quality, contribute to bids, interface with clients and collaborators in design and planning. Deliver to agreed budget, programme and quality along with supporting the preparation of project budget & programme. Responsible for the design of mechanical installations typically including municipal water and wastewater pumping stations, screens, grit removal plant, penstocks, valves, odour control systems, pipework etc. Site visits to carry out site surveys and the support of liaisons with clients, contractors & suppliers. Producing plant layouts, technical specifications, Wimes datasheets, valve schedules, equipment schedules, lifting strategies and P&IDs Producing pumping stations designs, headloss calculations and pumping system analysis / pump selection If you're passionate about innovation and turning bold ideas into reality, AECOM welcomes you. Join our team, where we don't just construct infrastructure but also uplift communities and enhance lives. Why not give our AECOM Water page on LinkedIn a follow to stay updated on the impactful projects we're working on and see firsthand the difference we're making in the industry Come grow with us. Become part of our dynamic Water business, which boasts around 700 experts across the UK & Ireland, including 170 specialists across our England & Wales Water Solutions team. Collaborate with top-tier civil, mechanical, electrical, and process engineers to deliver a variety of captivating projects, from small initiatives to large-scale ventures, all the way from concept to completion. Here, you’ll thrive in an inclusive and forward-thinking environment where your contributions are valued. Enjoy the Perks. At AECOM you'll enjoy a range of core and personalised benefits designed to support your future and well-being, customised to fit your lifestyle. Take advantage of career development opportunities, our flexible hybrid working model to ensure a work-life balance that suits your lifestyle, technical practice networks, AECOM University, and volunteering days.