SAP Ariba functional analyst (Freelance possible)

Role Overview:

• Participate in the ongoing digital transformation project (ShERPa) and manage complex change requests in SAP Ariba solutions.
• Support the transition from SAP ECC to a greenfield S/4HANA implementation with a focus on rebuilding Ariba integration.

Key Responsibilities:

• Engage in technico-functional workshops focused on Source-to-Pay (S2P) and Supply Chain Management (SCM) to redesign Ariba-S/4HANA interfaces.
• Perform interface mapping and development using SAP Cloud Integration Gateway (CIG).
• Collaborate on testing activities with internal functional teams and external consortium teams managing S/4HANA implementation.
• Ensure effective knowledge transfer to internal IT teams.

Technical Environment:

• Existing platforms: SAP ECC and SAP Ariba (SLP, Sourcing & Contracts, Guided Buying, Spend Analysis, Supply Chain Collaboration).
• Planned upgrade: Full S/4HANA implementation and integration redesign.

Required Experience & Skills:

• Minimum 8 years of technico-functional experience in at least two SAP Ariba modules: Supply Chain Collaboration, Sourcing & Contracts.
• Functional knowledge of SAP Ariba SLP and Guided Buying (preferred).
• Proven expertise in SAP CIG and integration mapping between Ariba and backend systems (SAP ECC or S/4HANA).
• Familiarity with public sector or public transportation industry environments.
• Hands-on experience with designing and implementing complex interfaces in large-scale projects.
• Knowledge of ServiceNow and Jira/Xray tools is a plus.

Conformity Criteria:

• Demonstrated technico-functional expertise in SAP Ariba SCC, Sourcing & Contracts (8+ years).
• Strong experience with CIG integration/mapping for SAP ECC/S/4HANA.
• General understanding of SAP ECC and SAP S/4HANA architecture.
• Previous involvement in Ariba implementations at NMBS is mandatory.
• Fluent in English, both spoken and written.