Sr SAP Middleware Support – ECC to S/4HANA Brownfield Migration - Remote

Job Description Sr SAP Middleware Support – ECC to S/4HANA Brownfield Migration - Remote Role Overview The SAP Middleware Support resource will be responsible for the design, remediation, support, and optimization of integration objects across the SAP ECC to S/4HANA brownfield migration landscape. This role will ensure continuity, stability, and performance of all system interfaces throughout migration, testing, cutover, and post-go-live stabilization. For this REQ we can only accept US CIT for DoD!! The senior consultant with 10-15 years overall experience will work closely with Basis, functional, data, and ABAP teams to support end-to-end integration scenarios and enable seamless interoperability between SAP and non-SAP systems. Key Responsibilities Integration & Middleware Support Support design, build, and validation of SAP integration objects leveraging: SAP PI/PO (Process Integration / Process Orchestration) APIs (REST, SOAP), IDocs, BAPIs Maintain and support interface mappings, data transformations, and integration logic across ECC and S/4HANA landscapes Support publish/subscribe and event-driven integration patterns using middleware tools Assist in defining and executing integration strategy and deployment approach for S/4HANA conversion Migration & Remediation Activities Assess existing ECC interfaces for S/4HANA compatibility and simplification impacts Support remediation of obsolete or non-compliant integration objects Update technical specifications, interface mappings, and transformation logic for S/4HANA readiness Identify opportunities to optimize or replace legacy integrations with modern API-based approaches Support third-party system compatibility assessments and interface redesign where required Testing & Cutover Support Support interface testing across: System Integration Testing (SIT) User Acceptance Testing (UAT) Mock Conversions and Cutover cycles Troubleshoot and resolve integration defects across environments Validate end-to-end data integrity and system interactions Support cutover planning and sequencing for middleware objects Hypercare & Production Support Provide post-go-live support for integration defects and performance issues Monitor middleware performance, message queues, and interface failures Support stabilization and defect triage during hypercare phase Cross-Functional Collaboration Partner with: Functional teams to validate business process integration ABAP developers for custom interface remediation Data migration teams for data flow consistency Basis/infrastructure teams for environment and transport management Support alignment of integration design with overall S/4HANA architecture and data strategy Required Qualifications 8–10+ years of experience in SAP middleware/integration support roles Proven experience in SAP ECC → S/4HANA Brownfield migrations Hands-on experience with: SAP PI/PO configuration and support IDocs, BAPIs, RFCs REST/SOAP APIs and integration frameworks Strong experience troubleshooting integration objects and resolving interface issues Understanding of integration patterns (point-to-point, middleware-based, event-driven) Experience supporting integration testing cycles and migration cutover Preferred / Nice-to-Have Skills Experience with SAP Integration Suite / CPI Familiarity with API management and microservices architecture Experience with middleware performance tuning and monitoring tools Exposure to SAP modules such as FICO, MM, PP, or StRM in integrated landscapes Bonus / Highly Preferred Experience with: iBaseT (MES / MRO integration) Dassault DELMIA Apriso (Manufacturing Operations Management integration) Experience integrating SAP with manufacturing/MES systems in aerospace or regulated industries Knowledge of serialization, shop floor integration, and production data flows Soft Skills Strong problem-solving and root-cause analysis capabilities Ability to work across global teams and multiple stakeholders Clear communication of technical issues to both technical and functional audiences Ability to manage multiple integration priorities in a fast-paced migration program Typical Deliverables Updated interface inventory and remediation tracker Integration design documents and mapping specifications Test results and defect logs for middleware objects Cutover readiness inputs for integration scope Hypercare defect resolution reports Position Context ( Program Alignment) Supports brownfield conversion scope including integration remediation and stabilization Part of the middleware team supporting PI/PO and integration stack within overall program resourcing Works in alignment with broader S/4HANA transformation efforts including data, testing, and cutover workstream Requirements