Estimator (Electrical)

Overview

In this role you will prepare accurate electrical estimates for water and wastewater infrastructure, collaborating with pre-construction, engineering and project delivery to meet client needs, schedules and budgets. You will translate technical data into costed solutions and support tender submissions and value engineering. The position sits within Costain’s mission to deliver integrated infrastructure at scale for UK water and other sectors. It’s a chance to impact major public works with cross-functional teamwork and commercial accountability.

Responsibilities

• Prepare detailed estimates, cost plans and tenders for electrical works in the water and wastewater sector
• Review tender docs, drawings, specs, schedules and scope to identify requirements
• Develop labour, plant, materials, subcontract and supplier costs
• Obtain and assess quotations from suppliers and subcontractors
• Carry out detailed take-offs and quantify electrical equipment, materials and installation needs
• Identify risks, opportunities, exclusions and assumptions in tender packages
• Liaise with electrical engineers, designers, suppliers, subcontractors and project teams to validate estimates
• Collaborate with mechanical, civils, process and construction estimators to develop integrated project estimates
• Support value engineering to improve cost, programme and constructability
• Prepare tender submissions, pricing schedules and supporting docs
• Ensure estimates align with company procedures, governance and commercial requirements
• Participate in tender adjudications and present estimates, risks and opportunities to senior stakeholders
• Maintain estimating records and contribute to post-tender reviews and lessons learned
• Support development of estimating processes, cost databases and benchmarking information
• Build relationships with clients, delivery partners, suppliers and subcontractors

Key requirements

• Degree in Electrical Engineering (or equivalent)
• Relevant professional qualification or industry body membership
• Experience on major UK water infrastructure programmes (e.g., AMP)
• Proven experience producing detailed estimates and tender submissions
• Experience obtaining and analysing supplier and subcontractor quotations
• Strong commercial and financial awareness
• Excellent attention to detail and numerical ability
• Strong communication and stakeholder management skills
• Good knowledge of Microsoft Excel and estimating software/packages
• Ability to work collaboratively within multidisciplinary teams

• Strong communication
• Stakeholder management
• Collaboration
• Electrical estimating in construction/infrastructure
• Interpreting electrical drawings/specs/schedules
• Cost modelling and take-offs

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