Senior Engineer

Pertemps; Old Warren; Hybrid; GBP 55,000 - 65,000; Full time

Job summary

A leading utility company in the UK is seeking a Senior Mechanical Engineer to lead high-impact capital projects in sewage treatment. You will ensure the delivery meets the highest standards in design, health, and safety while driving innovation. The ideal candidate will have extensive experience in utilities systems and relevant engineering qualifications. This role offers a competitive salary of £55,000 to £65,000 per annum, with plenty of opportunities for professional growth and benefits including 26 days of annual leave.

Benefits

Competitive salary

26 days holiday per year

Access to health and well-being benefits

Qualifications

• Proven experience in LV, MV, and HV systems within utilities is essential.
• Engineering HNC or HND or Degree within an Engineering Discipline is required.
• Knowledge of Health and Safety in the Construction Industry is necessary.

Responsibilities

• Maximise value by understanding risks and providing mitigation.
• Provide Design sign‑off and Technical assurance during delivery.
• Constantly improve Technical Asset Standards.

Skills

Proven experience in LV, MV, and HV systems within utilities

Knowledge of Health and Safety in the Construction Industry

Understanding of project delivery in process industries

Knowledge of developing technical project solutions

Education

Engineering HNC or HND / Degree within an Engineering Discipline

Job description

Join Thames Water as a Senior Mechanical Engineer – Drive Innovation within Capital Delivery Projects.

Seize this exciting opportunity to be part of Thames Water’s dynamic team, leading the delivery of high‑impact capital projects.

As a Senior Mechanical Engineer, you’ll play a pivotal role in the transformation and modernisation of sewage treatment works across the Thames Valley area.

This is more than just a job—it’s your chance to shape the future. You'll ensure projects meet the highest standards of design, delivery, and health & safety, while championing sustainability and engineering excellence. Your technical expertise will not only uphold our rigorous standards but also drive continuous improvement and innovation across our infrastructure.

What you’ll be doing as a Senior Mechanical Engineer

• Get the proper technical outcomes from the Project Definition Briefs and maximise value by understanding risks and providing mitigation.
• Input and constantly improve Technical Asset Standards.
• Provide Design sign‑off between Asset Management and Capital Delivery as dictated by the Delivery Stream.
• Provide Technical assurance during the delivery, commissioning, and handover of Assets.

Working Location

Hybrid—Clearwater Court. You will be required on‑site and in the office 2‑3 days a week.

Working hours

36 hours a week, Monday to Friday.

What you should bring to the role

• Proven experience in LV, MV, and HV systems within utilities (water, energy, power).
• Engineering HNC or HND / Degree within an Engineering Discipline.
• Knowledge of developing technical project solutions and Briefs in their specific discipline.
• Understanding of project delivery in process industries.
• Knowledge of Health and Safety in the Construction Industry.
• Understanding of industrial processes in the engineering discipline.

What’s in it for you?

• Competitive salary from £55,000 to £65,000 per annum.
• Annual Leave – 26 days holiday per year, increasing to 30 with length of service (plus bank holidays).
• Access to many benefits to help you take care of your health and your family's health and well‑being, and your finances – from annual health MOTs and access to physiotherapy and counselling to Cycle to Work schemes, shopping vouchers and life assurance.

Find out more about our benefits and perks.

Who are we?

We’re the UK’s largest water and wastewater company, with more than 16 million customers relying on us every day to supply water for their taps and toilets. We want to build a better future for all, helping our customers, communities, people, and the planet to thrive.

It’s a big job and we’ve got a long way to go, so we need help from passionate and skilled people, committed to making a difference and getting us to where we want to be in the years and decades to come.

Learning more about our purpose and values

Learn more about our purpose and values.

Working at Thames Water

Thames Water is a unique, rewarding, and diverse place to work, where everyday you can make a difference, yet no day is the same. As part of our family, you’ll enjoy meaningful career opportunities, flexible working arrangements and excellent benefits.

If you’re looking for a sustainable and successful career where you can make a daily difference to millions of people’s lives while helping to protect the world of water for future generations, we’ll be here to support you every step of the way. Together, we can build a better future for our customers, our region, and our planet.

Real purpose, real support, real opportunities. Come and join the Thames Water family. Why choose us? Learn more.

We’re committed to being a great, diverse, and inclusive place to work. We welcome applications from everyone and want to ensure you feel supported throughout the recruitment process. If you need any adjustments, whether that’s extra time, accessible formats or anything else, just let us know. We’re here to help and support.

When a crisis happens, we all rally around to support our customers. As part of Team Thames, you’ll have the opportunity to sign up to support our customers on the frontline as an ambassador. Full training will be given for what is undoubtedly an incredibly rewarding experience. It’s also a great opportunity to learn more about our business and meet colleagues.

Disclaimer

Due to the high volume of applications we receive, we may close the advert earlier than the advertised date, so we encourage you to apply as soon as possible to avoid disappointment.