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Senior Mechanical Design Engineer

Job in Havant, Hampshire County, PO9, England, UK
Listing for: United Living
Full Time position
Listed on 2026-07-18
Job specializations:
  • Engineering
    Mechanical Engineer
Salary/Wage Range or Industry Benchmark: 55000 - 75000 GBP Yearly GBP 55000.00 75000.00 YEAR
Job Description & How to Apply Below
Senior Mechanical Design Engineer Skip to main content

We use cookies to enhance your browsing experience, serve personalised ads or content, and analyse our traffic. By clicking "Accept All" you consent to our use of cookies.#Senior Mechanical Design Engineer page is loaded## Senior Mechanical Design Engineer Apply locations:
Afeco - Havant:
Afeco Tamworth time type:
Full time posted on:
Posted Todayjob requisition :
JR101000

As part of the United Infrastructure Group, we are a dynamic and innovative specialist engineering services, solutions and products provider focused on servicing our clients’ immediate and future needs. We do this through the development of industry-changing cleantech products as well as through engineering delivery excellence.
We specialise in the design and delivery of process, mechanical, electrical and ICA engineering-based projects, products and solutions. Regardless of the project, they all pursue the same goal: to improve the efficiency and sustainability of our water, wastewater and waste treatment.
We have a team of highly skilled and experienced professionals with extensive consulting and contracting experience, including engineers, scientists and commercial managers. Our knowledge and expertise spans more than 30 years, across industries including: water, wastewater, marine, energy and power sectors. At AFECO, we cover all stages of the innovation and project delivery cycle from concept through to operations.
Our aim is simple – to provide the most effective solutions and products on the market and thus, exceed clients expectations through market-leading technology. From technical through to commercial and management expertise, we have the in-house expertise to execute a range of projects from the most basic to highly complex.

Job title  | Senior Mechanical Design Engineer Location | Havant or Tamworth Line Manager  | Design Manager

About us AFECO is an engineering services provider, delivering high quality process and MEICA design and installation projects predominantly across the South of England and Midlands for the water industry. We have excellent inhouse engineering teams capable of delivering all stages of the project cycle, from concept through to commissioning, with a strong focus on process led innovative and robust yet appropriate solutions.

We have a portfolio of varied projects covering both wastewater and clean water projects for planned and reactive projects.

Due to the expansion of our team, we are currently recruiting for a Senior Mechanical Design Engineer to work within our multi-disciplinary teams. This is a great opportunity for enthusiastic individuals who fit in with our company values and are keen to develop in a forward-thinking organisation.

Role Purpose The Senior Mechanical Design Engineer will lead the mechanical design of water and wastewater treatment assets across the project lifecycle, from concept and detailed design through to construction support and commissioning. The role requires strong technical capability, sound engineering judgement, and the ability to mentor junior engineers while working collaboratively with multi-disciplinary teams.

Key Responsibilities Technical Design & Delivery
* Lead mechanical design activities for water and wastewater treatment projects, including pumping stations, treatment works, pipelines, and associated infrastructure
* Produce and review mechanical designs, calculations, specifications, schedules, and drawings
* Ensure designs comply with relevant standards, legislation, client specifications, and health & safety requirements
* Undertake optioneering and value engineering to balance cost, performance, risk, and operability
* Support constructability, commissioning, and handover activities

Equipment & Systems
* Specify, size, and select mechanical equipment such as pumps, valves, screens, blowers, mixers, and mechanical treatment processes
* Review supplier technical submissions and manage technical interfaces with vendors
* Assess whole-life cost, reliability, and maintainability of mechanical systems

Project & Stakeholder Interface
* Work closely with process, civil, electrical, and ICA engineers to deliver…
Position Requirements
10+ Years work experience
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