Senior Mechanical Engineer - Water

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 South West and Wales Water team, with flexibility to be based out of one of our South West locations (Exeter, Bristol & Cardiff).

In this role, you'll play a key part in delivering multi-billion-pound capital programmes across the UK water sector, contributing to projects ranging from small rural sites to complex, multi-million-pound infrastructure and non-infrastructure schemes in both water and wastewater. These long-term frameworks extend through AMP8 and AMP9, offering security, variety, and the opportunity to make a real impact in shaping sustainable water solutions.

South West Water – Engineering Consultancy Services Framework:
Lot3 – Multi‑Discipline Engineering Design

Wessex Water – Capital Delivery Partner Framework:
Lot2 – Design Consultants

Southern Water – £3.7billion Capital Delivery Programme:
Strategic Delivery Partner (SDP) Frameworks:
Supporting Tier1 Contractors on:
Lot1 – Non‑infrastructure water projects;
Lot2 – Non‑infrastructure wastewater projects;
Low Complexity Delivery Route & SDP Lot3 Infrastructure Frameworks:
Partnering exclusively with Tier1 Contractors to deliver high‑quality wastewater infrastructure projects.

As part of a growing multi‑disciplinary team with a long‑standing presence in the region, you'll be joining a group recognised for excellence, having won the IChemE Global Water Award
2023. You'll have opportunities to develop your technical career not only through involvement in local projects but also by contributing to flagship initiatives across the UK&I and globally.

With flexible working from our locations, you'll collaborate across multi‑disciplinary teams to deliver innovative and sustainable solutions. As part of AECOM, you'll engage in impactful projects from inception through to delivery, enhancing the environment and supporting communities.

• 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 and 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 station 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 Linked In a follow to stay updated on the impactful projects we're working on and see firsthand the difference we're making in the industry!

Become part of our dynamic Water business, which boasts around 600 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.

• Career development opportunities
• Flexible hybrid working model to ensure a work‑life balance that suits your lifestyle
• Technical practice networks
• AECOM University
• Volunteering days

Ready to push the limits of what's possible?

• A degree (or equivalent) in Mechanical Engineering.
• Progress towards Chartered Engineer status with a relevant institution, such as IMechE.
• Knowledge of pump station design, piping design, valve selection, and hydraulics.
• A proven ability to deliver engineering designs, reports, drawings, technical specifications, and calculations with confidence and precision.
• Hands‑on experience in delivering innovative solutions for water and/or wastewater engineering projec