Sr. SAP Middleware Consultant (PI/PO)

Position: Sr. SAP Middleware Consultant (PI/PO, ECC to S/4 HANA brownfield migration)
Location: 100% Remote
Employment mode: Contract position
Customer domain: Aerospace & Defense

Role Overview:

The SAP Middleware Support resource will be responsible for the design, remediation, support, and optimisation 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.

The senior consultant with 10-15 years of 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 the 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 optimise 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 stabilisation and defect triage during the 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 in 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 (Client's Program Alignment)

• Supports brownfield conversion scope, including integration, remediation and stabilization
• Part of the middleware team supporting PI/PO and the integration stack within the overall program resourcing
• Works in alignment with broader S/4HANA transformation efforts, including data, testing, and cutover workstream