Senior Mechanical Engineer

Thames Water; Sandford-on-Thames; Hybrid; GBP 55,000 - 65,000; Full time

Job summary

A leading water and wastewater company in the UK is looking for a Senior Technical Assurance Engineer to help transform sewage treatment works. This role requires collaboration with various stakeholders to ensure adherence to technical standards. The successful candidate will lead projects, emphasizing public health and environmental safety. Salary ranges from £55,000 to £65,000 annually, plus benefits including generous holiday and health schemes. Join a company dedicated to making a positive impact on communities and the environment.

Benefits

26 days holiday per year, increasing to 30

Generous Pension Scheme

Health and wellbeing benefits

Qualifications

• Background in design and construction-related roles.
• Knowledge of Construction (Design and Management) Regulations 2015.

Responsibilities

• Collaborate with engineers and operations for project solutions.
• Ensure compliance with technical and environmental standards.
• Support health, safety, and well-being initiatives.

Skills

Collaboration with internal stakeholders

Risk Management

Technical compliance

Education

Degree in Mechanical Engineering

Job description

Overview

Join Us as a Senior Technical Assurance Engineer – Shape the Future of Water and Wastewater Infrastructure. Are you ready to make a lasting impact on communities and the environment? As a Senior Technical Assurance Engineer at Thames Water, you’ll be at the forefront of transforming and modernising our sewage treatment works. Your expertise will drive the delivery of innovative, cost-effective, and resilient engineering solutions that protect public health, preserve ecosystems, and support sustainable growth.

In this pivotal role, you’ll collaborate closely with contractors and multidisciplinary teams to ensure designs meet our rigorous technical standards and quality benchmarks. You’ll be empowered to lead projects that matter—bringing engineering excellence to life while contributing to a cleaner, greener future.

What you’ll be doing

• Collaborate with diverse internal stakeholders, including engineers, asset management, and operations to shape fit-for-purpose solutions and positively influence innovation, value for money, and resilience.
• Collaborate with and provide assurance for consultants and contractors who support the delivery of often large and complex capital projects.
• Ensure compliance with legislation, regulations, policies, standards, and expectations so that solutions are delivered safely and meet the technical and environmental requirements of the Project Brief.
• Actively support Thames Water’s ‘triple zero’ Health, Safety, and well-being vision by auditing and reviewing Risk Assessments, Method Statements, and Safe Systems of Work to help achieve zero incidents, zero harm, and zero compromise.
• Identify and support the management of delivery risks and opportunities.
• Contribute to the creation of Project Briefs and respond to RFIs.

Work pattern

Hybrid – Clearwater Court with travel to Oxford Sewage Treatment Works. The successful candidate will be required to be on-site for 2 to 3 days a week. 36 hours a week, Monday to Friday; we are open to part-time and full-time hours.

What you should bring to the role

• Be educated to a degree level in Mechanical Engineering.
• Background in working in a design and construction-related role.
• Awareness of applying the Construction (Design and Management) Regulations 2015 (CDM 2015).

Nice-to-haves

• Technical knowledge and expertise of pumping systems, mechanical package plant, and the ability to work with various engineering disciplines to create fully operational solutions.

What’s in it for you?

• Competitive salary from £55,000 to £65,000 per annum, depending on skills and experience.
• 26 days holiday per year, increasing to 30 with length of service (Plus bank holidays).
• Generous Pension Scheme through AON.
• Benefits to support health, wellbeing, and finances – including annual health MOTs, access to physiotherapy and counselling, Cycle to Work schemes, shopping vouchers, and life assurance.
• Performance-related pay plan directly linked to company performance measures and targets.

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. Learn more about our purpose and values.

Working at Thames Water

Thames Water is a unique, rewarding, and diverse place to work, where every day 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. Learn more.

Inclusive hiring and accommodations

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.

Disclaimer

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.