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

AECOM; Greater London; On-site; GBP 35,000 - 50,000; Full time

Job summary

A global engineering firm is seeking a Mechanical Engineer to support clients with asset management, focusing on hydraulics and pump systems. The ideal candidate will have a BEng in Mechanical Engineering (2:1 or above) and experience in producing engineering specifications. Responsibilities include pumping calculations, liaising with design teams, and providing project delivery support. This role offers the opportunity to work in a collaborative environment dedicated to improving performance and efficiency in water-related projects.

Qualifications

• Demonstrable interest in water projects.
• Relevant work experience an advantage.
• Basic computer skills essential.
• Willing and able to work towards professional qualifications such as IET & IMechE.

Responsibilities

• Production of engineering specification documents related to hydraulics and pump systems.
• Production of lifting, access, and maintenance plans.
• Liaising with internal and external design teams, clients, and contractors.
• Provision of timely reporting to the client and internal team lead.

Skills

Pumping calculations

System schematics production

Report writing

Effective communication

Education

BEng Mechanical Engineering (2:1 or above) or equivalent

MEng preferred

Tools

Word

Excel

Job description

Our 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 required performance, provide suitable access for operators, and develop performance specifications and schedules to define all items of equipment, whilst ensuring that they comply with relevant client and industry standards. They also initiate control philosophies to define how a plant will operate, before collaborating with other designers. The successful applicant will work closely with other design disciplines and stakeholders, to ensure that the design elements interface correctly, and the design fits all parties’ requirements.

Responsibilities

• Pumping calculations and specifications.
• Production of system schematics.
• Production of equipment and drive schedules.
• Production of engineering specification documents related to hydraulics and pump systems.
• Work with clients to assist 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.
• Provision of timely reporting to the client and internal team lead.

Qualifications

• BEng Mechanical Engineering (2:1 or above) or equivalent; MEng preferred.
• Relevant work experience an advantage.
• Enthusiastic, hard‑working, technically proficient, with ambition and drive.
• Basic computer skills essential (Word/Excel) and good report‑writing skills beneficial.
• Water‑related modules an advantage.
• Willing and able to work towards professional qualifications such as IET & IMechE.
• Demonstrable interest in water projects.
• Capability to satisfy client and business expectations and consider wider financial and commercial implications.
• Effective communication skills, both verbal and written.
• Ability to structure and prioritise work effectively through close cooperation with the team.
• Ability to work independently without losing initiative and focus.

Apply now to join AECOM’s global team of engineering professionals dedicated to building a better world.