
Location
Hybrid working with time split between home and our Reading office at Clearwater Court (RG1 8DB).
Hours
36 hours per week, Monday to Friday.
Salary
Up to £90,000 per annum depending on experience.
About the Role
Are you a recognised Process Engineering Subject Matter Expert with extensive municipal water treatment experience? Do you want to influence the future of the UK water industry while helping deliver one of the country's most ambitious environmental investment programmes? At Thames Water, you'll play a critical role in delivering our AMP8 investment programme and beyond, providing technical leadership across major water treatment projects that will improve services for millions of customers and help protect the environment for future generations.
This is an opportunity to shape engineering standards, drive innovation, mentor the next generation of engineers, and solve some of the industry's most complex challenges.
As a Principal Process Engineer, you'll be a technical authority within your discipline, providing leadership, assurance and specialist expertise across a broad portfolio of water treatment projects and operational challenges. You'll be responsible for:
- Leading the design, review and assurance of complex water treatment engineering schemes.
- Providing expert process engineering support to operational and project teams, helping resolve complex technical issues.
- Ensuring engineering solutions comply with regulatory requirements, industry legislation and Thames Water asset standards.
- Leading technical sign-off and oversight activities throughout the project lifecycle, from concept through to commissioning and handover.
- Mentoring, coaching and developing engineers, building a high-performing and collaborative engineering culture.
- Managing and reviewing engineering design partner deliverables to ensure quality, value and technical excellence.
- Supporting incident investigations and implementing process improvements to enhance operational performance and resilience.
- Influencing and continuously improving technical standards, best practice guidance and engineering governance.
- Working closely with multidisciplinary teams to deliver safe, sustainable and resilient engineering solutions.
- Supporting the evaluation, testing and implementation of emerging technologies and innovative approaches that improve customer and environmental outcomes.
This role offers the chance to join a business investing billions in its assets, people and communities, where you'll have the platform to influence major strategic programmes and help shape the future of water infrastructure.
Additional benefits include 26 days holiday per year (increasing to 30 with length of service plus bank holidays), car allowance, performance-related pay linked to company targets, a generous pension scheme through AON, private medical healthcare, and access to a wide range of wellbeing and financial benefits such as annual health MOTs, physiotherapy, counselling, Cycle to Work schemes, shopping vouchers and life assurance.
Thames Water is committed to creating a diverse and inclusive workplace where you can make a meaningful difference every day, supported by flexible working arrangements and excellent career opportunities. Together, we can build a better future for our customers, our region, and our planet.
Experience
Extensive experience within municipal water treatment process engineering, with a proven track record of delivering complex projects and solutions.
Recognition as a technical leader with strong engineering judgement and decision-making capability.
Experience leading, mentoring and developing technical teams.
Excellent communication and stakeholder management skills, with the ability to influence and challenge effectively at all levels.
A strong understanding of project delivery including design, constructability, commissioning, operability, maintainability and whole-life asset performance.
Awareness of commercial and contractual considerations when supporting capital projects and operational programmes.
About you
A passion for continuous improvement, innovation and professional development.
A collaborative approach and commitment to creating an inclusive and diverse engineering environment.
Qualifications
A degree in Process Engineering, Chemical Engineering or a related discipline.
Chartered Engineer status or demonstrable progress towards achieving chartership.
Thames Water




















