About The Role As Whitewater Group continues to expand its Off‑Site Manufacturing (OSM) operations, we are seeking an OSM Plant & Finance Controller to support the financial and operational performance of our manufacturing facility. This is a hybrid role, ideally suited to someone based in Tomelloso or the surrounding area. Working closely with the OSM Director, the successful candidate will act as a key Finance partner to the factory, providing financial insight and supporting operational decision‑making while maintaining a strong presence on the factory floor.

This role will be responsible for overseeing plant performance reporting and KPIs, developing reliable product, project and job costing, monitoring labour productivity, capacity, overhead absorption, manufacturing efficiency, WIP, inventory and working capital, and supporting budgeting, forecasting and monthly performance analysis. Working closely with the Spain Finance Lead and Operations team, the successful candidate will also support month‑end closing, P&L; and balance sheet reporting, CAPEX tracking, intercompany costing and billing, and ensure manufacturing activity is accurately reflected in the financial results. Work closely with the OSM Director as the key Finance partner for the factory, supporting operational and financial decision‑making and maintaining a strong presence on the factory floor.

Develop and maintain plant performance reporting and KPIs, including labour productivity, capacity, overhead absorption and manufacturing efficiency. Develop reliable product, project and job costing,



including actual versus estimate analysis, and margin follow‑up. Monitor WIP, inventory, purchasing and working capital related to the manufacturing operation.

Support budgeting, forecasting and monthly performance analysis for the plant. Work closely with the Spain Finance Lead on monthly closing, invoicing, P&L; and balance sheet, ensuring manufacturing activity is accurately reflected in the financial results. Track the new factory CAPEX programme, including spend, commitments and vigente versus budget.

Support intercompany costing and billing between the manufacturing entity and the Group's commercial entities. Collaborate in the ERP implementation and other systems/process improvements affecting the manufacturing operation. 2–4 years of experience in Controlling, ideally within a manufacturing, industrial, engineering or project‑based environment. ~ University degree in Finance, Engineering, Accounting, Business Administration, Economics or a related field. ~ Strong knowledge of cost accounting and controlling. ~ Experience with manufacturing and/or project costing, budgeting, forecasting and variance analysis. ~ Knowledge of inventory and WIP analysis and CAPEX tracking.



~ Strong Excel skills and good systems literacy. ~ Experience with ERP systems is highly desirable. ~ Fluent in English and Spanish, both written and spoken. ~ Willingness to work primarily from the Tomelloso plant, either based locally or spending a minimum of 3 days per week onsite. ~ Exposure to a diverse portfolio of complex and high‑impact international engineering projects. Access to ongoing internal training and professional development programmes.

Opportunity to work within multicultural teams across global projects and environments. Involvement in technically challenging projects that encourage continuous learning and growth 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. #

📌 OSM Plant & Finance Controller (Tomelloso)
🏢 Whitewater Group
📍 Tomelloso