Lead Mechanical Engineer – Water & Wastewater Systems

AECOM; Belfast City District; Hybrid; GBP 70,000 - 100,000; Full time

Benefits offered by this job

Hybrid working model

Career development opportunities

AECOM University

Volunteering days

Job summary

AECOM is seeking a Principal Mechanical Engineer in Belfast to lead mechanical design for water and wastewater projects. The role combines design, review and coordination across disciplines within a hybrid work model, with site surveys and client liaison.

You will oversee mechanical plant selection, piping layouts, 3D modeling in Revit, and help set programmes and budgets while mentoring Graduates and Engineers.

Qualifications

• A degree (or equivalent) in Mechanical Engineering.
• Chartered (or near Chartered) Member of a relevant Professional Institution.
• Hands‑on experience in delivering innovative solutions for water and wastewater engineering projects.
• A proven ability to deliver engineering designs, reports, drawings, technical specifications, and calculations with confidence and precision.

Responsibilities

• Undertake the design and review of mechanical elements in wastewater and water infrastructure treatment projects, such as chemical dosing, pumping stations and sludge treatment units, from conception to handover.
• Prepare feasibility studies, outline design, detailed design and construction support.
• Produce P&IDs using Plant 3D, including Valve schedules, Equipment Schedules and Instrument Schedules.
• Produce and co-ordinate mechanical 3D models using Revit.
• Oversee mechanical plant selection including preparation of specifications, production of pump calculations, preparation of WIMES Data Sheets and lifting strategies, piping and plant layouts etc.
• Liaise and collaborate with our other discipline teams including process, electrical, structural and civils nationwide.
• Visit site to carry surveys and support of liaisons with clients, contractors & suppliers.
• Lead and contribute design review meeting such as HAZOPs, ALMs and Workshops.
• Act as Mechanical Lead on projects including WwTW, WTW and Infrastructure. Supporting the Project Manager and Design Leads to successfully deliver the Mechanical Scope to programme and budget.
• Assist the Project Manager to set realistic programmes and budgets for Mechanical projects.
• Be a Line manager for Mechanical Graduates, Engineers and Senior Engineers.

Skills

Mechanical Engineering

Project delivery

Team leadership

Education

Bachelor's degree in Mechanical Engineering

Job description

AECOM is seeking a Principal Mechanical Engineer in Belfast to lead mechanical design for water and wastewater projects. The role combines design, review and coordination across disciplines within a hybrid work model, with site surveys and client liaison.

You will oversee mechanical plant selection, piping layouts, 3D modeling in Revit, and help set programmes and budgets while mentoring Graduates and Engineers.