Senior Mechanical Design Engineer - Water Industry

We are recruiting a Senior Mechanical Design Engineer to join our dynamic Water Consultancy team operating across the UK. You’ll work on exciting AMP8 and AMP9 projects, ensuring exceptional water services in a collaborative environment.

Tetra Tech RPS Water Consulting is a team of engineers, designers, modellers, and data analysts providing asset management and operational strategy development to support business planning and delivery for our water industry clients.

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• You have experience liaising with the client to understand their needs, interpret data, and develop project plans, coordinating multidisciplinary teams to achieve project goals.
  
• You produce technical outputs such as technical specifications, schedules, reports, sizing and designing pumping systems and aeration systems, and are familiar with collaborative planning reviews and designs of solutions.
  
• You provide engineering inputs and design outputs in collaboration with other disciplines, producing general arrangement drawings, 3D models, 2D plans and sections, and piping & instrumentation diagrams.
  
• You have strong communication skills and deliver technical presentations to clients and design engineers, input into collaborative discussions including technical workshops, safety reviews, HAZOPs and ALMs.
  
• You understand how water and wastewater treatment processes operate and assess existing site infrastructure to deliver mechanical design.
  
• You participate in a meaningful impact on millions of lives across the UK, working with the largest water companies and ensuring a positive influence on the communities we serve.
  

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• Balance workload across a variety of projects within major long‑term frameworks with water companies and contractors across the UK.
  
• Seek to achieve positive outcomes for projects and the community.
  
• Work closely with senior and principal engineers and stakeholders supporting project delivery.
  
• Act as a mentor and guide to less experienced members, checking work and providing technical governance and oversight.
  
• Interpret and understand technical drawings and supervise production, ideally through AutoCAD and/or Inventor experience.
  
• Undertake asset condition surveys and prepare reports and recommendations.
  
• Contribute to the production of process and instrumentation diagrams (P&IDs).
  
• Prepare mechanical design deliverables including calculations, reports, specifications, datasheets, drawings, schedules, and procurement documentation.
  
• Support compliance with CDM duties, producing design risk assessments.
  
• Ensure quality assurance systems and procedures are followed, maintaining high standards.
  
• Act as a project manager, package manager or design team leader as required.
  

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• Good technical understanding of mechanical engineering principles.
  
• Significant water industry experience.
  
• Proficient in pump selection and design of pumping systems.
  
• Use of P&IDs to create equipment, valve, and pipe schedules.
  
• Production of specifications, reports and technical documentation.
  
• Compliance with CDM regulations and designing for safety.
  
• Knowledge of contract procurement and engagement, ideally NEC forms of contract.
  
• Managing work to time, cost, and quality criteria.
  
• Supporting junior staff in technical and personal development.
  
• Travel and site visit ability, surveying, inspecting and witnessing mechanical equipment and installations.
  
• Knowledge of design tools such as AutoCAD is an advantage but not essential.
  

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• A degree‑level qualification in mechanical engineering or a closely‑allied subject, ideally IMechE accredited. Postgraduate qualifications are an advantage.
  
• Chartered engineer or working towards nearing chartership.
  

A personal development plan and a transparent career pathway, a diverse community and a company that puts its people first and prioritises wellbeing.

We’re a connected community, working together to achieve exceptional outcomes with flexibility, collaboration and hybrid working offered as standard.

Representing an exciting new chapter, RPS has become a Tetra Tech company, offering market‑leading development and project opportunities to solve complex problems.

We embed principles of mutual dignity and respect across all people processes to reflect the communities and clients we serve.

We have a trusted partner list and do not acknowledge speculative CVs or unsolicited candidate introductions from agencies not on this list.