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Salary
≈ $59k – $97k per year (Estimated)
Location
Hybrid (Manchester, United Kingdom)
Seniority
Principal
Visa
Licensed UK visa sponsor
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 20, 2026. First seen by Alion on Oct 15, 2026. MWH Treatment scores A on the Alion truth index.

Overview
Company
Impact
Profile match
Headquartered in Salford, United Kingdom, MWH Treatment is a leading integrated design and build contractor specializing in the water and wastewater sectors. Operating across major utility frameworks as part of RSK Group, the company delivers large-scale capital schemes, environmental infrastructure, and advanced process engineering solutions. By leveraging multidisciplinary technical expertise and modern digital delivery methods, it helps public and private water providers build resilient, energy-efficient facilities.

Senior / Principal Structural Engineer

Location: Any UK location with flexible working offered

Are you looking for the chance to shape major UK water infrastructure projects?

Do you enjoy solving complex structural engineering challenges?

Would you like to see your designs progress from concept through to construction?

If so, we'd like to hear from you.

We are looking to strengthen our Engineering team with a Senior or Principal Structural Engineer.

You'll work on a diverse range of water and wastewater projects across the UK. You'll help deliver assets that make a real difference to communities and the environment.

Working within a Design and Build environment means you'll have the opportunity to see your designs become reality. You'll collaborate with multidisciplinary teams across the UK and internationally while working on projects delivered through nine major water frameworks.

Why join us?

  • Work on nationally significant water and wastewater infrastructure projects.
  • See your designs progress from concept through to construction.
  • Enjoy flexible and hybrid working arrangements.
  • Develop your technical and leadership skills.
  • Support and mentor junior engineers.
  • Collaborate with experienced multidisciplinary teams.
  • Influence project delivery and engineering decisions.
  • Help shape sustainable solutions for future generations.

What will you be doing?

Structural Design

  • Produce structural design calculations for water and wastewater treatment projects.
  • Design reinforced concrete and structural steelwork in accordance with relevant Eurocodes and British Standards.
  • Review structural content of construction drawings and models.
  • Review subcontractor design proposals.

Project Delivery

  • Coordinate structural designs with other engineering disciplines.
  • Ensure designs consider buildability, standardisation and DfMA principles.
  • Support construction activities through technical advice and site visits.
  • Deliver projects safely, on programme and within budget.

Technical Leadership

  • Support and develop junior engineers.
  • Share technical knowledge and best practice.
  • Assist in improving engineering processes and procedures.
  • Promote sustainable and environmentally responsible design.

Collaboration

  • Liaise with internal and external project stakeholders.
  • Work closely with civil, mechanical, electrical and process disciplines.
  • Collaborate with our extended global engineering team in Pune & Singapore.

Is this role right for you?

You may be interested in this opportunity if you:

  • Enjoy solving challenging engineering problems.
  • Want to broaden your experience across a variety of projects.
  • Like working in collaborative multidisciplinary teams.
  • Are looking to develop your leadership capability.
  • Want to contribute to projects that have a positive environmental impact.

Ready to take the next step?

Whether you're an experienced Senior Engineer looking for greater responsibility or a Principal Engineer seeking new challenges, this role offers the opportunity to make a real impact.

Apply today and help deliver the next generation of water and wastewater infrastructure across the UK.

    Qualifications

    What you will bring....

    Essential:

    Strong structural engineering design background, including technical detailing for Water Treatment and Sewage Treatment Projects

    A proven track record of structural engineering within the water with a desire to work in a design and build environment

    Good knowledge of structural analysis and ability to use Microsoft Excel and design software such as StaadPro and Tekla TEDDS

    Degree qualified in Civil and/or Structural Engineering (or equivalent)

    Membership of a relevant professional institution

    Good working knowledge of CDM and construction Health & Safety.

    You will be required to travel within the UK occasionally either to an office or site.

    Desirable

    Chartered or nearing chartership

    Good track record for the design of water retaining structures to construction standard using Eurocodes

    Experience of working for a global organisation.

    Experience of working with remote/dispersed teams. Experience in the Water/Wastewater Treatment Industry.

    Ability to embrace collaborative and innovative working.

    Knowledge of BIM procedures and techniques Wider experience of structural design across the construction industry

    Experience of outline and tender structural design

    Behavioural Competencies:

    Communication Collaboration

    Client Focus

    Striving for results

    Integrity, Trust, and Respect

    Coaching and Providing Feedback

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