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Salary
≈ $42k – $88k per year (Estimated)
Location
In office (United Kingdom)
Visa
Licensed UK visa sponsor
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 23, 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.

About The Role:

We arelooking to strengthen our Southern Water Testwood (Hampshire) Site Construction team with an experienced site based Mechanical Project Engineer

You will report directly to the M & E Managerand your role will supervise and control all mechanical site activities in the most efficient manner, to the specification and within the contract time without risk to the health and safety of all concerned and providing a quality end product, ensuring a Quality installation with all ITP,scompleted as the work progresses.

Key responsibilities will include:

  • Support the Site Manager in maintaining a safe working environment for all employees, supply chain partners and visitors;
  • Ensure that all relevant HS&E documents are correctly recorded and reviewed when received and that they are the latest version;
  • Check that all relevant documents adequately describe the work to be carried out;
  • Review and comment on Method Statements and Work Instructions as required by the Project Execution Plan;
  • Supervise supply chain partner work to ensure that it is carried out in accordance with Method Statements and Work Instructions;
  • Record the progress of the works on record drawings or other suitable means when required;
  • Record all non-conformance and improvement opportunities and agree action with the person in charge of the works;
  • Provide input to design reviews to ensure that all agreed designs can be constructed and operated in an efficient manner;
  • Liaise with supply chain regards site deliverables and related interfaces;
  • Liaise and coordinate with site team members as necessary on related MEICA issues;
  • Assist in the review of design deliverables, including equipment and instrument lists, P&IDs, mechanical assembly drawings and GA's, ensuring package integration;
  • Assist with reviews of MEICA sub-contractors RAMS, Quality Plans & ITPs for design, off site manufacture, installation testing and commissioning. Identify and coordinate all witness and hold points.

Qualifications

Knowledge/Experience:

Several years experience of working in the Energy sector. Understands pipework / steelwork fabrication, welding and erection. Recognises and can follow Isometric, GA and P&ID drawings.

Education/Qualifications

HNC / HND in Mechanical Engineering or good apprenticeship in pipework and welding along with experience

SSSTS

CSCS

First Aider

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