Mechanical Engineer - Water

  • Murray McIntosh Associates Ltd
  • Jan 12, 2026
Contractor Engineering

Job Description

Mechanical Engineer - Water Sector (Contract)


- 500- 530 per day (Inside IR35) 12-month rolling contract
-Peterborough - on site 2 days every fortnight
-Mileage, lodging and 25 per night allowance reimbursed


We're recruiting an experienced Mechanical Engineer to support a major water sector programme, delivering full lifecycle mechanical designs from concept through to commissioning and handover. This is a long-term contract opportunity within a large, multi-disciplinary delivery environment, working on regulated water and wastewater capital projects.

The role

You'll be responsible for producing safe, compliant and buildable mechanical designs across a range of water and water recycling treatment assets. The role is remote/design-office based, with occasional site visits.
Key responsibilities include:

  • Delivering mechanical and hydraulic designs from concept through detailed design to handover
  • Designing pumping systems, pipework, mechanical building services and treatment process equipment
  • Selecting and integrating package plant (screens, filters, chemical dosing, disinfection, pumping stations)
  • Designing mechanical equipment for hazardous areas in line with DSEAR requirements
  • Ensuring designs comply with statutory and client standards (including CDM, PUWER, LOLER, PSSR)
  • Supporting standardisation and development of repeatable design solutions
  • Working closely with civil, electrical and process engineers in an integrated team
  • Ensuring health & safety and "safe to operate" principles are embedded into all designs


About you

To be considered, you'll need:

  • HND (or equivalent) in Mechanical Engineering
  • Strong practical experience delivering mechanical design within the water or wastewater sector
  • Proven experience with pumping systems, hydraulics and treatment plant equipment
  • Knowledge of modular build and construction methodologies
  • Working understanding of electrical, control and instrumentation interfaces
  • Experience working within regulated capital programmes and stage-gated design processes


You'll be comfortable working collaboratively, communicating clearly with project managers, contractors and technical leads, and balancing programme, cost and quality requirements.



Contract details

  • Contract: 12 months rolling
  • Rate: 500- 530 per day (Inside IR35, DOE)
  • Location: Peterborough - 2 days every two weeks on site
  • Expenses: Mileage, lodging and 25 per night allowance reimbursed


Apply

If you're a Mechanical Engineer with strong water sector design experience looking for a long-term contract with consistent workload, apply now or get in touch for more detail.