Job Description
Role Purpose
To design, develop, and deliver mechanical engineering solutions for water and wastewater treatment assets, pumping stations, pipework systems, and associated infrastructure. The Mechanical Design Engineer ensures designs are compliant with relevant standards, cost‑effective, maintainable, and optimised for reliability and performance.
Mechanical Design & Engineering
- Produce detailed mechanical designs for water and wastewater treatment systems, including pumping systems, process equipment layouts, pipework, valves, frameworks, pressure‑rated systems, and rotating equipment.
- Prepare engineering drawings, specifications, P&IDs, datasheets, and bill of materials.
- Carry out design calculations including pump head calculations, flow/pressure sizing, structural loadings (basic), and equipment selection.
- Ensure designs comply with water industry standards, specifications, and regulatory requirements.
- Support development of 3D models and BIM outputs (where applicable).
Technical Governance & Compliance
- Ensure all designs follow CDM regulations, HAZOP/HAZCON considerations, and safe‑by‑design principles.
- Ensure compliance with company design standards and relevant regulations (e.g., WIMES, Pressure Equipment Regulations, BS/ISO standards).
- Conduct design risk assessments and participate in technical reviews.
Project Support & Delivery
- Work with project managers, civil/ICA/electrical engineers, and external suppliers during project scoping, design, procurement, installation, and commissioning.
- Provide technical support during construction, including responding to RFIs and reviewing contractor submissions.
- Assist with site surveys, asset assessments, and feasibility studies.
- Review and approve vendor drawings and equipment documentation.
Continuous Improvement & Innovation
- Identify opportunities for improved asset performance, reduced operational costs, and system optimisation.
- Support standardisation of mechanical solutions across the business.
- Keep up to date with industry advancements, materials, technologies, and sustainability best practices.
Qualifications
Essential Qualifications & Experience
- Degree or HNC/HND in Mechanical Engineering or related discipline.
- Experience designing mechanical systems within the water, wastewater, utilities, or process industry.
- Proficiency with CAD software (SolidWorks, AutoCAD).
- Strong understanding of pumps, valves, pipework, hydraulic systems, and mechanical plant used in water treatment.
- Ability to produce engineering calculations and technical documentation.
- Experience working to industry standards and regulatory requirements.
Desirable Qualifications
- Chartered or working towards chartership (CEng/IEng) with IMechE or similar institution.
- Experience with BIM (Revit, Plant 3D).
- Knowledge of WIMES specifications, DWI standards, and water industry best practice.
- CSCS / SHEA Water or other industry safety certifications.
Additional Information
Some Of Our Benefits Include
- Career development – from the moment you join, you’ll be supported to develop, grow your skill set and progress your career the way you want.
- Cultivate – access to our idea and innovation platform, empowering you to drive positive business change.
- Cycle to work scheme
- Discounts – access to our leisure and shopping discounts and rewards platform.
- Employee networks – opportunity to join our organisation wide employee networks such as our Veteran’s network, Women’s network, and Young People’s network which is dedicated to supporting and retaining employees in the early stages of their careers and empowers young employees and future leaders through Continuous Professional Development (CPD), Social Value and Team Building initiatives.
- Health and Wellbeing Support – access to our employee programme which includes access to a virtual GP and Dentist, mental health support and counselling, fitness and nutrition, and financial and legal advice.
- Health Cash Plan
- Holiday purchase scheme
- Payroll Giving – the opportunity to donate regularly from your gross pay to support charities of your choice.
- Pension – you will be eligible to join our pension scheme which we will also contribute to.
- Personal Support Network – you will receive a dedicated buddy and mentor and will join an early careers community of peers that will support you forward every step of the way.
- Reward and Award Schemes – access to our long service awards and above and beyond rewards.
- Social Value – you will be encouraged to support social impact activities each year to support charities and local community organisations.
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