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

Simple Solutions•Jacksonville, FL

7d•Remote

About The Position

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. 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.

Requirements

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
Hands-on experience with: IDocs, BAPIs, RFCs
Hands-on experience with: 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
US CIT for DoD

Nice To Haves

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
Experience with iBaseT (MES / MRO integration)
Experience with 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
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

Responsibilities

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
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
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
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
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