Commercial Assistant Admin (Madrid)

Role Overview

The Commercial Administrator supports the Commercial Team in delivering effective commercial control across projects, ensuring all processes are organised, traceable, compliant, and aligned with Mercury procedures. Working closely with Quantity Surveyors (QS), Commercial Leads, and Commercial Managers, this role is critical in managing commercial documentation, procurement administration, financial tracking, and reporting, particularly in fast‑paced data centre environments.

Key Responsibilities

• Compliance: Maintain structured and up‑to‑date commercial documentation and filing systems; control and track contracts, subcontracts, LOIs, POs, and change orders; manage commercial trackers (variations, subcontracts, procurement logs, payments); maintain and track Authority Matrix approvals (Project &).
• Commercial Support: Support QS and Commercial Managers with daily commercial activities; prepare documentation for valuations, cost r...