Senior Mechanical Design Engineer - Water & Wastewater Infrastructure

Are you a Senior Mechanical Design Engineer with proven UK water/wastewater experience? Join a growing multidisciplinary team delivering treatment and network infrastructure projects across the South.

The Role

You'll lead mechanical design delivery from feasibility and outline design through to detailed design and construction/commissioning support. You'll own design packages, review technical outputs and coach engineers to ensure safe, compliant, buildable solutions.

Key Responsibilities

• Lead mechanical design for treatment plants, pumping stations, pipelines and associated assets

• Produce/review calculations, specifications, schedules and technical documentation

• Review and approve work from engineers and CAD designers

• Develop solutions for pumps, pipework, valves, rotating equipment and process plant

• Coordinate with civil, process and EICA teams to deliver integrated designs

• Lead/support client meetings, design reviews and technical workshops

• Ensure compliance with BS EN, WIMES, DSEAR, Eurocodes and relevant UK regulations

• Support site visits, inspections and commissioning across the South (occasional nationwide travel)

• Mentor junior engineers and drive continuous improvement within the mechanical discipline

About You

• 7+ years' mechanical design experience in UK water/wastewater projects

• Degree in Mechanical Engineering (or similar); CEng or working towards desirable

• Strong knowledge of mechanical systems used in treatment and network infrastructure

• Confident using AutoCAD and mechanical design/modelling tools (Revit advantageous)

• Solid understanding of H&S and regulatory compliance in a regulated environment

• Able to manage workload, prioritise and deliver design packages to time/cost/quality

• Clear communicator, comfortable presenting and defending design decisions

Working Pattern

A mix of office-based, hybrid and site work with travel across the South of England and occasional nationwide projects.

What's on Offer

• Salary up to £75,000 depending on experience

• 25 days' annual leave plus bank holidays

• Pension scheme

• Discretionary bonus

• Private healthcare

• Death in Service benefit

• Hybrid working

Apply

If you're a Senior Mechanical Design Engineer looking to lead high-impact water infrastructure projects, we'd welcome your application.