Senior estimator

Location: Peterborough/ Hybrid

Who are we?

Here within the @one Alliance we are a totally collaborative organisation made up of our eight partner companies (Anglian Water, Balfour Beatty, Barhale, Binnies, MMB, MWH Treatment, Skanska and SWECO) and our extended supply chain, delivering over half of Anglian Water’s capital investment programme. Water and the natural environment are the foundation of life, society, and our economy. The East of England is home to unique rivers, wetlands, and coastlines—but it is also one of the most water‑stressed regions in the UK. With one of the most ambitious capital investment programmes in the industry, we are delivering resilient water supplies, enabling sustainable growth, tackling climate change, and protecting the natural environment.

The Opportunity

We are looking for an experienced Estimator to Join the @one Alliance and play a key role in shaping the future of water infrastructure across the East of England.

As a Senior Estimator, you will be a vital part of either our Central Estimating Team or embedded within a Business Unit, supporting a wide range of projects including Water & Water Recycling Treatment Plants, Pipelines and Pumping Stations & Reservoirs and Network Storage.

Working within an outperformance contract model, you will lead on developing robust cost estimates while challenging all aspects of construction costs, risk, and overheads.

What You’ll Be Doing

Estimation & Project Support

• Produce CAPEX estimates across optioneering, outline, and detailed design stages
• Collaborate with multi‑disciplinary teams to define scope and buildability
• Engage with supply chain partners to obtain accurate quotations
• Prepare estimates using industry software and MS Excel

Stakeholder Engagement

• Advise and challenge on design requirements and cost impacts
• Support delivery teams with estimating strategy and alliance processes
• Manage priorities and expectations across multiple stakeholders

Leadership & Development

• Mentor and support junior estimators
• Potential line management responsibilities
• Deputise for the Head of Estimating when required

Systems & Continuous Improvement

• Develop and maintain cost models and libraries
• Identify efficiencies and implement best practice
• Maintain and analyse data within cost bases
• Ensure smooth handover of estimates to delivery teams
• Align estimates with Anglian Water cost capture requirements

Commercial & Cost Capture

• Ensure smooth handover of estimates to delivery teams
• Align estimates with Anglian Water cost capture requirements

Health, Safety & Wellbeing

• Champion a strong safety culture and “Safer Every Day” mindset
• Ensure compliance with all H&S policies and procedures
• Contribute to continuous improvement and a zero‑accident culture

About You

We’re looking for someone who is:

• An experienced Estimator ready for a senior role
• Educated to degree level (Engineering, Quantity Surveying) or equivalent experience
• Experienced in infrastructure, utilities, or construction environments

  Key Skills

  • Strong analytical and numerical ability
  • Excellent communication and collaboration skills
  • Proactive, motivated, and eager to learn
  • Highly organised and able to meet deadlines
  • Advanced MS Office skills and familiarity with estimating software

  Why Join @one Alliance?

  • Be part of a purpose‑driven organisation making a real environmental impact
  • Work on major, high‑profile infrastructure projects
  • Collaborate within a supportive, forward‑thinking alliance
  • Opportunities for career progression and professional development

  The Anglian Water @one Alliance. Eight partners, endless opportunities.