Estimating System Analyst

Pertemps Thames Water
Reading, Berkshire
This is a fantastic opportunity for someone who is looking to get into an Estimating environment at Thames Water. If you have the passion to learn, not only you will be in one of the only roles in the organisation where you will be able to use our unique, water industry specific cost modelling / estimating system. You will also get a great insight to where we are looking to invest in the future and what costs are involved within our asset investment plans.

Your primary responsibility will be to develop robust, transparent, and auditable cost models to support key internal and external stakeholders. These models will be produced mainly within our corporate estimating system, ensuring consistency with organisational standards and best practices.

You will work closely with the Lead Estimators, seeking costing guidance and technical support as required to ensure accuracy and completeness. In addition to cost modelling, you will also have the opportunity to contribute to the estimating of small to medium-sized projects, providing end-to-end support as needed.

What you’ll be doing as an Estimating System Analyst

Review, cleanse, and analyse small to medium cost/carbon data to enable the quarterly updating of the cost unit cost database for the infrastructure quadrant.

Lead stakeholder meetings at key milestones, ensuring alignment on coding, costing methodologies to progress the development of new unit cost/carbon models.

Lead the development and delivery of action plans addressing strengths, weaknesses, and improvement opportunities within the infrastructure unit cost and carbon models, ensuring that findings are implemented effectively across the modelling process.

Assist in identifying and developing opportunities to enhance the end to end cost and carbon modelling process, including improving data quality, streamlining workflows, strengthening governance, and supporting the adoption of new tools or methodologies.

Review and check designer scope templates using project brief and detailed drawings to ensure scope is aligned to coding structure and details are correct prior to costing for small to medium value schemes, query as appropriate

Provide database costing support for small to medium size schemes to key stakeholders including business planning, early stage estimating and benchmarking process where required use non-database rates seek support from Lead for any special site-specific costs.

Challenging key stakeholder project costs for non-complex schemes through ‘value for money’ statement development for small to medium infrastructure schemes, helping drive through commercial cost efficiency challenges

Assist in providing relevant support to the Estimating Support Manager and/or the wider EES team as and when required. Base Location: Hybrid – Reading
Working Pattern or hours:  36 hours

What you should bring to the role
To thrive in this role, the essential criteria you’ll need is:

Strong analytical skills and a passion for working with numbers

Experience in cost modelling or data analysis or estimating functions

Proficiency with Excel, modelling tools, or data analysis software Additional skills and experiences would be great to have/bring:

Experience within the water industry or a closely related sector, with an understanding of regulatory environments

Strong ability to interpret complex technical, financial, or carbon related information and communicate clearly to a range of stakeholders

Understanding of embodied carbon What’s in it for you?

Competitive salary circa £45,000 per annum, depending on experience

Annual Leave - 26 days holiday per year increasing to 30 with the length of service (plus bank holidays) 

Performance-related pay plan directly linked to company performance measures and targets

Generous Pension Scheme through AON

Access to lots of benefits to help you take care of you and your family’s health and wellbeing, 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 (Please note different T&Cs apply if on secondment)

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. 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
Posted 2026-04-13

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