Graduate Mechanical Engineer​/Water and Summer Graduate Mechani

Graduate Mechanical Engineer / Water - Croydon and Exeter (Summer 2026 starts)

The Mechanical engineering team supports clients with the management of their assets. This work can encompass everything from designing complete new build treatments works through to assessing the condition of existing plant and machinery. They play an important role in helping our clients develop new assets or improvements to existing, offering both improved performance and efficiency.

Our mechanical water engineers examine the hydraulics of systems to calculate and specify pump systems, as well as developing plant room layouts. They ensure designs meet the required performance also providing suitable access for operators so that the equipment can be safely maintained, and develop performance specifications and schedules to define all items of equipment, whilst ensuring that they comply with the relevant client and industry standards.

They also initiate control philosophies to define how a plant will operate, before collaborating with the other designers. The successful applicants will work closely with other design disciplines and stakeholders, to ensure that the design elements interface correctly, and the design fits all parties requirements.

• Pumping calculations and specifications.
• Production of system schematics.
• Production of equipment and drive schedules.
• Production of engineering specification documents in relation to hydraulics and pump systems.
• Working with our clients to assist them with project delivery, asset and network performance and design.
• Production of lifting, access and maintenance plans.
• Liaise with internal and external design teams, clients and contractors as appropriate.
• Provision of timely reporting to both the client and internal team lead.

AECOM is the world’s trusted infrastructure consulting firm, delivering professional services throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. On projects spanning transportation, buildings, water, new energy and the environment, our public- and private‑sector clients trust us to solve their most complex challenges.