Alexander Associates
Senior Mechanical Design Engineer
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Senior Mechanical Design Engineer - Water AMP8
Location: Maidstone, Kent (flexible hybrid)
Job type: Long-term Contract (Outside IR35)
A leading water client is seeking an experienced mechanical design engineer to support long-term capital delivery programmes. This client-side position covers the full project lifecycle including feasibility, optioneering, detailed design, construction, and commissioning.
Responsibilities
- Lead mechanical engineering design activities from feasibility through to commissioning on clean water infrastructure projects.
- Produce and review detailed mechanical designs, calculations, specifications, reports, and drawings for treatment plant assets, pumped systems, pipework, and chemical dosing equipment.
- Carry out and validate hydraulic calculations, including pump sizing, system curves, head loss assessments, and surge considerations.
- Ensure design outputs comply with client standards, WIMES, CDM requirements, and relevant industry legislation.
- Coordinate with multidisciplinary teams including process, civil, electrical, and MEICA disciplines.
- Undertake site surveys, inspections, testing, and commissioning support.
- Review contractor design submissions, ensuring technical accuracy, constructability, and alignment with client specifications.
- Support project managers by contributing technical input to project documentation, programme development, and delivery planning.
- Maintain strong working relationships with internal teams, stakeholders, and framework partners.
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Requirements
- HNC/HND or degree in mechanical engineering or equivalent.
- Demonstrated experience delivering mechanical design within water or utilities projects, ideally including treatment and clean water infrastructure.
- Strong capability in producing and reviewing mechanical calculations, specifications, and technical reports to senior-engineer level.
- Knowledge of WIMES, water treatment processes, pumping systems, hydraulic analysis, and industry standards.
- Ability to work autonomously, manage competing priorities, and deliver high-quality outputs across multiple live projects.
- Effective communication and collaboration skills for multidisciplinary coordination.
- Full UK driving licence for travel across client's supply area.
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This is an excellent opportunity to join a major water client delivering essential infrastructure projects. It offers stability, flexibility, and the chance to contribute across the full project lifecycle while working within a supportive, multidisciplinary environment.
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