Principal Engineer - Waste Infrastructure

Join Severn Trent’s Design Team as a Principal Engineer  

At Severn Trent, our people are at the heart of everything we do. We’re in the top 5% of utility companies worldwide for employee engagement, and we’re equally proud of our strong Glassdoor score — reflecting how much our people love working here.  

 Join us to make a positive impact on the environment and our communities, while being valued and supported in a truly inclusive workplace. 

 If you want to do more, because you care, we want you on our team. 

Our ambitious five-year programme, encompassing over 5,000 innovative projects, is designed to tackle the growing challenges of delivering exceptional water and waste services. We are committed to addressing issues such as flooding and river health, ensuring the best outcomes for our customers and the environment. With our dedicated in-house design team, we are poised to achieve outstanding results and make a significant impact. 

Join us in driving forward our innovation. We do more because we care. Is that you? 

ABOUT THE ROLE 

We have an exciting opportunity for a Principal Engineer to play a pivotal role in delivering our Wastewater Capital Programme. This is a key technical leadership position where you will oversee feasibility and design for a range of wastewater treatment projects. You’ll provide expert guidance to the Waste Infrastructure Design Team, mentor team members, and support the Design Manager in developing technical capability across the team.

KEY RESPONSIBILITIES 

• Act as the technical authority, providing expert guidance and challenge across complex engineering decisions.  

• Lead the full design lifecycle, from feasibility and optioneering through to detailed design and commissioning readiness.  

• Develop and assess innovative TOTEX solutions that balance cost, performance, carbon, and risk.  

• Identify, manage, and mitigate design risks, including health, safety, and environmental considerations, often acting under CDM regulations.  

• Ensure all designs comply with regulatory requirements, internal standards, and quality assurance processes.  

• Integrate multiple disciplines to deliver cohesive, system-wide engineering solutions.  

• Engage with clients, stakeholders, and supply chain partners to ensure alignment and successful outcomes.  

• Mentor and develop engineers, building technical capability and strengthening team performance.  

• Drive innovation by introducing new technologies, design approaches, and continuous improvement practices.  

• Oversee project delivery to ensure designs are delivered on time, within budget, and to the required quality and performance standards. 

WHAT YOU’LL BRING 

• Extensive experience in the wastewater infrastructure sector. 

• Strong understanding of treatment processes (desirable). 

• Proven experience as Principal Designer and Designer under CDM regulations. 

• Expertise in civil design and specifications for wastewater infrastructure projects. 

• Track record of delivering innovative design solutions. 

• Full UK driving licence. 

WHAT’S IN IT FOR YOU 

Working here isn’t just a job. You can build a career at Severn Trent. We’ll reward you for it, too. We have a range of benefits that recognise great work, and award-winning training to help you reach your potential. And we’ll also help you play your part in looking after the environment and the communities where we live. 

With that in mind, here are just some of our favourite's perks that you’ll get being part of the Seven Trent family: 

• 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 per annum based on company performance)   

• 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 volunteering days per year