Principal Mechanical Engineer, Water Sector

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Overview

We are looking for a Principal Mechanical Engineer to join our growing Water Solutions team, with opportunities to be based across England & Wales offices. You will play a key part in delivering major UK water utility investment programmes, supporting the design and delivery of projects ranging from small rural sites to multi-million-pound infrastructure and non-infrastructure schemes. These frameworks are long-term and extend through AMP8 and AMP9, giving you the chance to contribute to sustainable water solutions across multiple regions.

Responsibilities

• 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.

As part of our team, you’ll work across multi-year frameworks and collaborate with offices internationally to deliver projects from inception to completion while creating innovative solutions that benefit the environment and communities.

Key Programmes and Frameworks

• South West Water – Framework for Engineering Consultancy Services: Lot 3 – Multi-Discipline Engineering Design
• Wessex Water – Capital Delivery Partner Framework Agreement: Lot 2 – Design Consultant
• Severn Trent Water – Lot 1 Major Projects Framework: Supporting AMP8 delivery plan valued at a TotEx of £14.9 billion
• Severn Trent D&B Projects – Supporting Tier 1 contractors on major non-infrastructure wastewater schemes
• Southern Water SDP Frameworks – Lot 1: Non-infrastructure water projects; Lot 2: Non-infrastructure wastewater projects
• Southern Water Low Complexity and Infrastructure Frameworks – Lot 2: Wastewater Infrastructure; Lot 3: Infrastructure Framework

Qualifications

• A degree in Mechanical Engineering with Chartered Engineer status (or working towards it) through a recognised institution like IMechE.
• Proven expertise in producing, reviewing, and approving engineering reports, designs, drawings, and specifications.
• A problem-solver at heart, capable of owning and resolving challenging technical issues.
• Leadership potential with ability to manage direct reports and support the growth of engineers.
• Excellent client and stakeholder engagement skills, with experience in team leadership, mentoring, and line management.
• Experience in the water and/or wastewater industry.

About AECOM & Benefits

We celebrate diversity and are committed to an inclusive workplace. We offer a range of core and personalised benefits, flexible hybrid working, career development opportunities, AECOM University, and volunteering days. We are an Equal Opportunity Employer and a Disability Confident Employer. Reasonable accommodations are available via ReasonableAccommodations@aecom.com.

For more information about the role, contact the recruiter on LinkedIn.