Principal Mechanical Engineer, Water Sector
- Full-time
- State/Province: Bristol, City of
- Business Group: DCS
- Legal Entity: AECOM Infrastructure and Environment UK Limited
- Business Line: Water
- Work Location Model: Hybrid
- Operating Group: International
- Primary Location: UK – Bristol, 3 Rivergate
Work with Us. Change the World.
At AECOM, we’re delivering a better world. We partner with clients to solve complex challenges and build lasting impacts. Our water team is expanding across South West and Wales, and we are looking for a Principal Mechanical Engineer to join our growing practice.
You will 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 shape sustainable water solutions.
Key Programmes You’ll Support:
- South West Water – Engineering Consultancy Services Framework: Lot 3 – Multi‑Discipline Engineering Design
- Wessex Water – Capital Delivery Partner Framework: Lot 2 – Design Consultants
- Southern Water – £3.7 billion Capital Delivery Programme: Strategic Delivery Partner (SDP) Frameworks – Supporting Tier 1 Contractors on Lot 1: Non‑infrastructure water projects and Lot 2: Non‑infrastructure wastewater projects
- Low Complexity Delivery Route & SDP Lot 3 Infrastructure Frameworks: Partnering exclusively with Tier 1 Contractors to deliver high‑quality wastewater infrastructure projects.
Here’s what you’ll do:
- Develop feasibility studies, outline and detailed designs, and provide construction support.
- Create design drawings, select mechanical plant, and prepare technical specifications.
- Collaborate with multidisciplinary teams, including civil, electrical, process, and mechanical engineers.
- Ensure high technical quality, contribute to bids, and maintain client relationships.
- Manage project budgets, schedules, and deliverables to meet agreed targets.
- Design mechanical installations for water and wastewater systems, including pumps, screens, valves, and odour control.
- Conduct site surveys and liaise with clients, contractors, and suppliers.
- Produce layouts, technical specifications, datasheets, and P&IDs for system designs.
Here’s what we’re looking for:
- A degree in Mechanical Engineering (or equivalent).
- Chartered Engineer status (or working towards it) through a recognised institution like IMechE.
- Proven expertise in pump station design, piping design, valve selection, hydraulics, producing, reviewing, and approving engineering reports, designs, drawings, and specifications.
- Experience in the water and/or wastewater industry.
We celebrate diversity, including neurodiversity, and believe it enriches our team. We welcome applications from all backgrounds and abilities. If you are an applicant with a disability that requires reasonable accommodation to complete the application process, please contact us at ReasonableAccommodations@aecom.com.
All your information will be kept confidential according to EEO guidelines.
We are a DisabilityConfident Employer and will offer an interview to applicants who have a disability or long‑term condition, who meet the minimum/essential criteria for the role. If you would like to apply through the DisabilityConfident Interview Scheme, please email ReasonableAccommodationsUKI@aecom.com.
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