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Senior Mechanical Engineer, Water

Job in Cardiff, Cardiff City Area, CF10, Wales, UK
Listing for: AECOM
Full Time position
Listed on 2025-11-28
Job specializations:
  • Engineering
    Water Engineer, Environmental Engineer, Civil Engineering, Water Management
Job Description & How to Apply Below
Position: Senior Mechanical Engineer, Water Sector

Company Description

At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive.

We're one global team driven by our common purpose to deliver a better world. Join us.

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
, with flexibility to be based out of one of our England & Wales offices.

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.

Key Programmes You’ll Support:

  • Southern Water – £3.7 billion Capital Delivery Programme:
  • Strategic Delivery Partner (SDP) Frameworks: Supporting Tier 1 Contractors on:
  • Lot 1:
    Non-infrastructure water projects
  • 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.
  • South West Water – Engineering Consultancy Services Framework:
  • Lot 3 – Multi-Discipline Engineering Design
  • Wessex Water – Capital Delivery Partner Framework:
  • Lot 2 – Design Consultants

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
.

Responsibilities:

  • 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

Qualifications

  • A degree (or equivalent) in Mechanical Engineering.
  • Progress towards Chartered Engineer status with a relevant institution, such as IMechE.
  • 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 projects.

We celebrate diversity, including neurodiversity, and believe it enriches our team. We welcome applications from all backgrounds and abilities.

AECOM is an Equal Opportunity Employer and we are committed to providing a work environment that is free from discrimination and harassment.

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Position Requirements
10+ Years work experience
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