Thames Water
Lead Estimator

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This is a fantastic opportunity for someone who is looking to get into a really niche team at Thames Water.
You will be using the water industry-specific engineering estimating system (Benchmark) package as your main source of cost information, but also as part of the role expected to develop bottom-up estimates from various data sources.
This Estimating function will enable the development of a project cost from an agreed scope, for optioneering/budget setting approval. It will also be used for benchmarking contractors’ actual costs in value-for-money statements as part of the end-to-end business process.
What you’ll be doing as a Lead Estimator
- Create bottom-up estimates when system costings aren’t available.
- Review of scope requirements for errors/inconsistencies and/or seek clarifications or additional information from the relevant designer team.
- Review and approve costs for all Estimates before submitting the final costing template to key stakeholders.
- Lead the process of developing a new bottom-up estimating database to improve our internal estimating capabilities.
- Review contractor returns, create or update standardised bottom-up estimate templates for future use by the wider Estimating team.
- Provide support and training to junior members of the team on the end-to-end process, supporting the system and providing any costing advice as deemed necessary.
- Proactively identify further opportunities to improve the end-to-end process.
- Ensure all stakeholders are actively engaged to meet agreed KPIs.
Reasons to use Rodeo
I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
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Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
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Base Location
Reading - Hybrid
Working Pattern or hours
36 Hours
What you should bring to the role
To thrive in this role, the essential criteria you’ll need are:
- Extensive experience in estimating is essential, along with previous experience within either an engineering, water or construction industry role.
- Strong communication /stakeholder engagement skills.
- Exceptional team player and able to lead projects when required.
- Excellent time management with the ability to work to tight deadlines.
- High attention to detail.


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What’s in it for you?
- Competitive salary up to £60,000 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.
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