Senior Process Engineer - Water

The UK water sector is facing increasing pressure to deliver resilient infrastructure, improve treatment performance and respond to changing environmental and customer needs. At Stantec, our Process Engineering teams are helping clients tackle these challenges by developing practical, sustainable solutions across the water cycle. We're looking for a Senior Process Engineer to join our growing teams in London, High Wycombe, Reading, Brighton, Southampton or Cambridge .

You'll work alongside experienced engineers and specialists across a varied portfolio of UK water projects, with opportunities to build your technical expertise and take greater ownership of project delivery. Whether your experience is in clean water, wastewater or both, this is an opportunity to work on technically interesting projects, contribute to client solutions and continue developing your career within a supportive and collaborative team.

As a Senior Process Engineer, you'll take responsibility for key areas of process engineering delivery across a range of water and wastewater projects. You'll combine your technical knowledge with practical project experience, working closely with multidisciplinary teams to develop effective engineering solutions. You will:

• Develop process engineering solutions across water and wastewater treatment projects.
• Undertake process calculations, mass balances, hydraulic assessments and treatment process evaluations.
• Develop and review technical reports, specifications, calculations and other project deliverables.
• Take ownership of technical work packages, managing inputs, quality and delivery to agreed timescales.
• Support process design development from concept through to detailed design and construction support.
• Contribute to site investigations, asset assessments, optimisation studies and technical workshops.
• Work closely with civil, mechanical, electrical, hydraulic and environmental engineers to develop integrated solutions.
• Engage with clients and project teams to understand requirements and translate challenges into practical engineering solutions.
• Support and mentor less experienced engineers, sharing knowledge and contributing to the wider development of the team.
• Contribute to technical innovation, best practice and continuous improvement across our Process Engineering work.

As a Senior Engineer, you’ll also have the opportunity to broaden your project and client experience, develop your leadership skills and take increasing ownership of technically challenging work. You’ll be supported to build the experience needed for your next career step, whether that’s towards technical specialism, project leadership or professional registration.

• Degree qualified in Chemical or Process Engineering or a related discipline.
• Experience in process engineering within the water, wastewater, utilities or related sectors.
• Practical experience in process design, calculations, mass balances, hydraulic assessments and/or treatment process evaluation.
• Good understanding of water and/or wastewater treatment processes and engineering principles.
• Experience taking ownership of technical tasks or work packages within multidisciplinary projects.
• Strong analytical and problem‑solving skills, with the ability to develop practical engineering solutions.
• Good written and verbal communication skills, with the confidence to work with colleagues, clients and other project stakeholders.
• Ability to manage your own workload and contribute effectively within a multidisciplinary team.

• Chartered or Incorporated Engineer (CEng/IEng) or actively working towards
• Membership of a relevant professional institution such as CIWEM, IChemE, ICE or IMechE.
• Experience working with UK water companies and AMP investment programmes.
• Experience across clean water or wastewater treatment, asset optimisation, process performance or infrastructure design.
• Experience supporting site investigations, commissioning, testing or process optimisation activities.
• Experience using digital tools and innovative approaches to improve process engineering delivery.
• Experience supporting bids, frameworks, client relationships or business development…