Key responsibilities Own technical architecture and solution design across SuccessFactors, S/4HANA Finance, and Ariba. Define integration architecture (real-time and batch) between SF, S/4HANA, Ariba, and third-party systems using CPI/PI/PO, APIs, middleware, IDocs, RFCs, REST/SOAP. Lead design for S/4HANA Finance data model, Fiori/UI5 apps, and extension strategies (BTP, side-by-side, in-app). Design and implement SAP Ariba integration (Ariba Network, Cloud Integration Gateway), catalog, contr…