Service Manager - M.Supplier Portal (m/f/d)

Own and manage day-to-day operations of METRO Link+, ensuring stability, data quality, and alignment with METRO’s Master Data Governance framework. Act as second-line escalation point for incidents and service requests related to supplier onboarding, registration, and master data workflows. Coordinate with development and QA teams to diagnose integration and process issues between METRO Link+ and SAP MDG-S systems. Support implementation of System Integration Testing (SIT) and User Acceptance Testing (UAT) for maintenance workflow features within METRO Link+ for both GOODS and COST suppliers. Drive rollout of Wave 3 and subsequent country deployments, where METRO Link+ acts as the entry point for suppliers in the Listing and Supplier Master Data maintenance processes. Analyze incidents, monitor SLAs, and apply corrective actions to prevent recurrence. Manage backlog items, define and refine requirements, and collaborate with the development partner (Wipro) to ensure timely delivery of fixes and enhancements. Maintain service documentation, workflows, and integration diagrams, ensuring knowledge transfer across teams. Prepare and present OKRs, KPIs, and service health reports to the Supplier Master Data Steering Committee. Promote transparency and collaboration across domains such as Finance, Own Brand, Supply Chain, and Quality. Support implementation of the new Supplier Identity and Access Management (IAM) platform (SailPoint + Microsoft Entra External ID) to improve security and scalability.