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

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