ABAP & AI Developer.ABAPDesign and develop OOABAP solutionsUser ExitsBADIsEnhancement FrameworkIDocsRFCsBAPIsOData ServicesREST APIsSOAP Web Services API & Middleware SkillsREST and SOAP Web ServicesJSON and XML payload handlingBasic knowledge of SAP CPI / SAP Integration Suite or ARIBA CIGAPI Management conceptsAuthentication methods (OAuth| Basic Auth| Certificates) Ariba Integration Support integrations between:SAP ECC/S4HANASAP Ariba Buying & InvoicingAriba SourcingAriba ContractsGuided BuyingSupplier Lifecycle & Performance (SLP)Configure and support SAP Ariba Cloud Integration Gateway (CIG). Develop and troubleshoot integration scenarios involving:Purchase OrdersRequisitionsInvoicesService Entry SheetsSuppliersContracts