Senior Estimator Construction in London

Job ID: 42591Reference: 300015891888967Location: London, Greater London, United KingdomDepartment: EstimatingBusiness Unit: AUK UKWork Type: HybridDate Posted: 2026-07-22Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets. We are more than 34,000 people, in over 30 countries, dedicated to improving quality of life. Working as part of a multidisciplinary estimating team, the Senior Estimator is responsible for the preparation, review and assurance of detailed electrical and mechanical cost estimates, including associated indirect costs, allowances, risks and opportunities. The role maintains clear audit trails of estimating assumptions, methodologies, benchmarks and source data to support estimate transparency and confidence in decision making. You will be responsible for leading the development and delivery of robust, accurate and risk informed capital cost estimates for complex multidisciplinary engineering and construction projects. The role focuses on electrical, mechanical and MEP systems across the full project lifecycle, from concept and feasibility through to detailed design and delivery, supporting both onshore and offshore programmes. You will develop and own the estimating strategy and estimate execution plan, coordinates inputs from engineering, commercial and project controls teams, and ensures that estimates are prepared in accordance with Arcadis methodologies, governance requirements and industry best practice and recognised estimating standards including CESMM4, ICMS2 and ICMS3You will provide technical leadership during estimate reviews, supports independent assurance activities, and presents estimate outcomes and key cost drivers to estimating leadership, project stakeholders and senior management. Develop and maintain project Cost Breakdown Structures (CBS) and ensure alignment with clients programme Work Breakdown Structures (WBS). Lead the development of detailed Electrical and Mechanical estimates from concept through to detailed design. Prepare quantities, cost models, benchmark analyses and estimating reports. Develop estimate basis documents, registers, productivity models and benchmarking analysis. Coordinate multidisciplinary estimating inputs from civil, structural, mechanical, electrical and process disciplines. Support estimating activities for major infrastructure, nuclear, defence, energy, utilities, industrial, offshore and onshore projects. Review contractor quotations and assess value engineering opportunities. Mentor and coach junior and intermediate estimators. Ensure compliance with Arcadis estimating standards, governance and quality procedures. Qualifications & Experience: Significant experience in electrical, mechanical or MEP estimating. Experience in sectors such as Nuclear, Defence, Energy, Utilities, Transportation or Buildings. Strong understanding of cost planning, risk analysis and benchmarking techniques. Experience reviewing contractor pricing and commercial submissions. Experience with CostX, Candy, Excel, Power BIBenchmarking databases Risk and uncertainty modelling Quantity take-off Cost planning and cost assurance Why Arcadis? You'll do meaningful work, and no matter what role, you'll be helping to deliver sustainable solutions for a more prosperous planet. Our Commitment to Equality, Diversity, Inclusion & BelongingWe want you to be able to bring your best self to work every day which is why we take equality and inclusion seriously and hold ourselves to account for our actions. Equality, diversity and inclusion is at the heart of how we improve quality of life and we work closely with our people across six ED&I Workstreams: Age, Disability, Faith, Gender, LGBT+ and Race.