Senior Design Engineer - Mechanical

Overview

At Severn Trent, our purpose is taking care of life’s essentials—and we’re passionate about making a difference. Not just because we should, but because we care. As we enter AMP8, our most ambitious five-year investment programme yet—nearly £13bn, with £6bn dedicated to capital projects—we’re embracing innovation like never before. Our Plug and Play approach is transforming how we deliver infrastructure: modular, scalable, and smart.

The Plug and Play approach will be a collection of common parts that can be connected in different ways and work together (like mechanical skids, modular frames, and packaged treatment units). They can be mixed and matched to create a whole range of different products.

We’re looking for a Senior Mechanical Design Engineer to join our Plug and Play team and help shape the future of water and wastewater infrastructure.

• Leading the mechanical design process, including specifications, optioneering, and detailed design.
• Collaborating with stakeholders to understand project requirements and translate them into robust mechanical solutions.
• Supporting early-stage commissioning planning and ensuring designs meet regulatory, safety, and operational standards.
• Continuously improving standard designs based on feedback, risk assessments, and performance data.
• Ensuring seamless integration between product design and site implementation teams.

Of course, it’s important that we attract the right skill sets and those with the right experience, but we value character, positivity and a caring attitude in equal weight. We want people who show up and roll their sleeves up—restless spirits who are ready to be part of something bigger, who care, who really care... because when you really care, you go above and beyond.

When you really care you don’t just talk about it — you do more.

We are looking for a design-focused mechanical engineer with a passion for infrastructure, modular engineering, and innovation. You’ll bring:

• A degree (or equivalent) in Mechanical Engineering or a related discipline and/or a minimum of 5 years’ proven experience in mechanical design.
• Familiarity with CAD and digital mechanical design tools (e.g., Inventor, Solid Works, AutoCAD Mechanical).
• Experience managing product life cycles and working with supply chains.
• Strong understanding of H&S, mechanical safety, and risk management in engineering design.
• An innovative and collaborative mindset with the ability to influence stakeholders to drive practical, effective solutions.
• Flexibility to travel between sites throughout the UK on an ad hoc basis as projects demand.

We welcome people from all walks of life and celebrate individuality—diverse minds, experiences and backgrounds help us learn and better serve our communities. We employ thousands of people who care about what they do. We are committed to inclusion with working groups focused on LGBTQ+, Women in Operations & STEM, Disability and Ethnicity.

Working here isn’t just a job. You can build a career at Severn Trent. We offer benefits that recognise great work, and training to help you reach your potential, while helping you contribute to the environment and communities where we live. Some of our perks include:

• 28 days holiday + bank holidays (and the ability to buy/sell up to 5 days per year)
• Annual bonus scheme (of up to £2,250, subject to eligibility)
• Leading pension scheme – we will double your contribution (up to 15% when you contribute 7.5%)
• Sharesave – the chance to buy Severn Trent Plc shares at a discounted rate
• Dedicated training and development with our Academy
• Electric vehicle scheme and retail offers
• Family-friendly policies
• Two paid volunteering days per year

We can’t wait to hear from you. Before you apply, you’ll need an updated copy of your CV and about five minutes to spare. And if you’re curious to find out more, search #Life At Severn Trenton  on social media.

P.S. We’ll always let you know the outcome of your application after the closing date—so keep an eye on your phone and emails!