About The Role As Whitewater Group continues to expand internationally across multiple markets, we are seeking a Cost Controller to support the financial and commercial control of our projects across a range of construction and critical infrastructure environments.

As Whitewater

Group continues to expand internationally across multiple markets, we are seeking a Cost Controller to support the financial and commercial control of our projects across a range of construction and critical infrastructure environments. This role will be responsible for monitoring and recording project costs, tracking the project budget, and supporting accurate financial reporting throughout the project lifecycle. Working closely with Project Managers, Operations, Procurement, and the wider Commercial team, the successful candidate will help ensure that project costs are accurately recorded, changes and variances are monitored, and project margins are effectively controlled.

The role will also support the preparation of accurate cost information for inclusion in company financial reports, while contributing to the effective management of project cashflow and supplier payments in line with contractual requirements. Hardworking, proactive and committed to delivering high-quality work. Good working knowledge of Microsoft Excel.

Spanish – C1 level and English – minimum B1 level. Exposure to a diverse portfolio of complex and high-impact international engineering projects. Access to ongoing internal training and professional development programs.

Opportunity to work within multicultural teams across integral projects and environments. Involvement in technically challenging projects that encourage continuous learning and growth. Liaise with Project Managers and the Operations team to support commercial, financial and contractual matters on site.

Monitor the project budget, track monthly changes and costs, and support project margin control.



Understand payment terms and support the timely issuance of valuations, supplier payments and protection of project cashflow. Receive, review and respond to subcontractor payment claims, visit sites to verify completed works, communicate with Project Managers, and ensure supplier payments and costs are recorded.

Work with the project team, Procurement and Estimating to calculate costs and prepare client quotations. Receive, review and respond to subcontractor variation claims and document the before-and-after analysis of changes. Control and record the overall project costs, including labour, materials, plant, subcontractors and overheads.

Prepare accurate project cost information for inclusion in company financial reports. Measure quantities of materials from drawings, BIM models or on site, under the supervision of the line manager. Understand how to manage disagreements with suppliers and clients while adhering to the terms of the contract.

Work collaboratively with the Project Manager and relevant departments, responding proactively to supervision and mentorship from senior members of the commercial team.

Whitewater

Group is a multi-disciplinary engineering company with water at the heart of everything we do. Headquartered in Ireland, with teams operating across Europe, we design, build, and maintain dependable water infrastructure for critical industries, including data centres, pharmaceuticals, food and beverage, manufacturing, and energy. Our engineers support clients from first concept through detailed design, installation, optimisation, and ongoing service.

We design, build, and maintain water infrastructure that is safe, efficient, and future ready - helping our clients in critical industries stay compliant, cut consumption, and improve performance across multiple sites and markets.

Whitewater

Group rethink water treatment through scalable, standardised infrastructure, combining technical depth, disciplined delivery, and a partnership approach across the full lifecycle.

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