Lead the Procurement and Materials Management solution design for an SAP ECC to SAP S/4HANA brownfield migration in a complex industrial and supply chain environment. Own the MM architecture, assess process and data impacts, and ensure a controlled transition of sourcing, purchasing, inventory, and supplier-facing processes into S/4HANA.

Key Responsibilities:

• Lead the MM solution design for brownfield conversion, including simplification impacts, retained ECC design areas, and S/4HANA process changes.
• Own architecture decisions across purchasing, source determination, inventory management, valuation, invoice verification, subcontracting, and supplier integration.
• Assess impacts on material master, Business Partner/supplier master, procurement interfaces, reporting, custom developments, and warehouse or logistics dependencies.
• Work with business, technical, data, integration, and testing teams to define remediation, validation,...