Graduate Mechanical Engineer​/Water and Summer

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

• Full‑time
• State/Province:
  London, City of
• Business Group: DCS
• Legal Entity: AECOM Infrastructure and Environment UK Limited
• Business Line:
  Water
• Work Location Model:
  Hybrid
• Operating Group:
  International
• Primary
  
  Location:
  
  UK - Croydon - Bedford Park

Work with Us. Change the World.

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 are the world’s trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.

Start here. Grow here.

There has never been a better time to be h accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of nearly 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

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

Our Mechanical engineering team supports clients with the management of their assets. This work can encompass everything from designing complete new build treatment 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.
• BEng Mechanical Engineering (2:1 or above, or equivalent).
• MEng in Mechanical Engineering (2:1 or above, or equivalent) would be preferred.
• Relevant work experience would be 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 would be 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 be able to consider the wider financial and commercial implications of their actions.
• Communicate effectively to internal and external clients, both verbally & in writing.
• Structure & prioritise work effectively through close cooperation with the team as a whole.
• Ability to work independently without losing initiative & focus.

• Submit Your Application: Complete the job application, uploading your resume, cover letter and the latest copy of your academic transcripts as one single document.
• Online Assessment: Complete our global online strength‑based assessment.
• Phone Screen: You may be invited to a…