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Senior Design Engineer; Water

Job in York, North Yorkshire, YO1, England, UK
Listing for: COWI
Full Time position
Listed on 2026-09-14
Job specializations:
  • Engineering
    Water Engineer, Civil Engineering, Environmental Engineer, Mechanical Engineer
Job Description & How to Apply Below
Senior Design Engineer (Water)
York / Derby / Glasgow Permanent Office /Home Hybrid Working Do you want to be a part of a growing Water team? Can you collaborate with colleagues across UK and International projects? Are you experienced in the Civil or Mechanical design of water or wastewater schemes? Then this could be the next adventure in your career.

Create Solutions that will enable a better tomorrow

To further strengthen our civil and mechanical capability on water and wastewater treatment projects, we are looking for a Senior Design Engineer with a water utilities background to join us. Your primary task will be to deliver engineering work related to the design of elements including water supply and wastewater infrastructure and non-infrastructure equipment. This includes pressurised mains, pumping stations, treatment works apparatus and other relevant equipment and structures.

Your role will be focused on the design environment which, while based in the UK, will involve interacting day-to-day with colleagues across our global hubs. There may also be opportunities to broaden your contribution to other areas within the Civils or MEICA discipline as well as client-side or site-based roles in a variety of major infrastructure settings.

Your key responsibilities will be:

Contributing towards the design of projects for a wide range of clients in the UK water sector

Planning design work and deliverables together with wider civils and MEICA teams

Development and technical assurance of design including use of relevant software and engineering calculations

Ensuring compliance with both local and international standards

Coordination of multi-disciplinary aspects of projects including civil, mechanical, electrical and process interfaces

Mentoring junior team members in design and supporting the development of graduate engineers

Contributing to the building of relationships with clients and other stakeholders

Acting as a technical link between senior discipline leads and junior engineers or international delivery teams

Your skills. Our team. Together we design the future.

The first step to success in this role is that you are eager to collaborate with the people around you, whether they are colleagues, partners or customers. Developing ties with others is something you do by acting respectfully and delivering on your promises. And you never get set in your ways but keep exploring new insights and ways to improve.

On top of that, you’ll have:

A degree in civil or mechanical engineering Achieved Chartered Engineer status (or equivalent) or be working towards Chartership with a recognised professional institution

Relevant experience within civil engineering, structural engineering or mechanical systems design in the water sectorA solid understanding of water-based systems such as pressurised water supply mains, pumping stations and treatment works apparatus

Experience with hydraulic modelling of pipe networks, steady state and transient analysis calculations

Knowledge of pipe support and stress calculations

Experience in the design or specification of mechanical equipment within water or wastewater treatment works (e.g. pumps, screens, pipework systems, valves, or sludge handling equipment)

Experience of pressure pipeline systems including surge considerations and associated civil interfaces such as thrust blocks

Awareness of hazardous area classification and relevant regulations such as DSEAR would be advantageous

Exposure to other mechanical equipment such as lifting equipment, actuated hydraulic gates and building services would be an advantage

Experience with 3D and BIM design

Knowledge of relevant Water Industry Specifications (WIMES)

Experience of applying CDM
2015 regulations to design tasks

Experience of design…
Position Requirements
10+ Years work experience
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