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Principal Mechanical Engineer, Water

Job in St Albans, Hertfordshire, AL1, England, UK
Listing for: AECOM
Full Time position
Listed on 2025-11-22
Job specializations:
  • Engineering
    Environmental Engineer, Water Management, Water Engineer
Job Description & How to Apply Below
Position: Principal Mechanical Engineer, Water Sector

Overview

Company: AECOM. Work with Us. Change the World. We are a global infrastructure consulting firm delivering a better world across water, transportation, buildings, energy and environment projects.

Job Title:

Principal Mechanical Engineer, Water Solutions team.

Location:

England & Wales offices (opportunities across multiple 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. Frameworks are long-term and extend through AMP8 and AMP9, enabling contribution to sustainable water solutions across multiple regions.

Responsibilities and activities involve flexible site visits, collaboration with multi-disciplinary teams, and contributing to innovative solutions that enhance the environment and communities.

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.

As well as providing innovative MEICA solutions, the team collaborates with other offices and Enterprise Capabilities centers in India, South Africa and Romania.

Qualifications

Ready to push the limits of what’s possible?

  • 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, confident in taking ownership of challenging technical issues and seeing them through to resolution.
  • Leadership potential, able to manage direct reports, inspire technical excellence, and support the growth of fellow engineers.
  • Exceptional client and stakeholder engagement skills, with experience in team leadership, mentoring, and line management.
  • Experience in the water and/or wastewater industry.

We celebrate diversity, including neurodiversity, and welcome applications from all backgrounds and abilities. If you require reasonable accommodation, please contact us at Reaso All information will be kept confidential according to EEO guidelines.

Additional Information

Interested in the role or life at AECOM? Follow us on Linked In, Facebook, Instagram, and You Tube to explore our people, projects, and insights. For role information, reach out to the recruiter on Linked In — Jay Hewitt.

About AECOM

AECOM is the world’s trusted infrastructure consulting firm, delivering services across the project lifecycle. We work on projects spanning transportation, buildings, water, new energy and the environment. We are a Fortune 500 company with a commitment to equity, diversity and inclusion, and environmental, social and governance priorities. See  and @AECOM.

Culture and Benefits

You will have hybrid work options and a flexible environment intended to support your growth and well-being. We offer a broad range of compensation, benefits, and well-being programs, technical practice networks, AECOM University, volunteering days, and opportunities for career development. We are an Equal Opportunity Employer and a Disability Confident Employer. If you have a disability or long-term condition and need accommodation, contact Reaso

ReqID: J

Business Line: Water

Business Group: DCS

Strategic Business Unit: Europe & India

Career Area: Engineering

Work Location Model: Hybrid

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