SAP Integration Lead — S/4HANA AR/AP eInvoicing Integration

Key responsibilities • Lead design and build of SAP adapters: AR outbound (billing documents to canonical / PINT-AE data), AP posting authorisation (reconciliation results to FI-AP/MM posting), status write-back tables and referencedata extracts (entity registry, supplier master). • Select and implement SAP integration mechanisms (OData/CDS services, IDocs, BAPIs/RFCs, events) exposed through the enterprise API gateway with mutual TLS and OAuth 2.0, aligned to the client’s SAP integration standards. • Manage transport requests across DEV/QA/PRD, coordinate SAP Basis activities, and align all deployments with the client’s SAP release calendar, design review board and CAB. • Lead regression planning and execution with the client’s IT team in the SAP BAU landscape; run production smoke tests after major deployments. • Coordinate the Ariba/Concur consultant, SAP developers and SAP functional consultants; review technical specifications and unit-test evidence. • Support SIT/UAT defect resolution, cutover and hypercare for SAP interfaces; deliver technical knowledge transfer to the BAU support team. Required experience and skills • 10+ years of SAP technical/integration experience with 4+ years on S/4HANA; deep knowledge of SD billing (VBRK/VBRP, output management), FI-AP/AR, MM invoice verification and tax touchpoints. • Strong hands-on ABAP (OO, CDS, RAP/OData exposure), IDoc, BAPI/RFC, and SAP Integration Suite/CPI or PI/PO; experience integrating SAP through external API gateways (Azure APIM / webMethods). • Experience leading SAP releases under strict change/release governance in large, multi-instance landscapes. • SAP certification in S/4HANA integration, ABAP or finance; excellent English