Senior SAP S/4HANA AP/AR & Business Partner Expert

We are partnering with a leading organisation in the Belgian financial services sector undertaking a strategic SAP ECC to S/4HANA Brownfield migration. This is an opportunity to support the transformation of Accounts Payable, Accounts Receivable and Business Partner processes while working closely with internal business and master data teams. As a trusted functional expert, you will help stakeholders understand SAP standard functionalities, evaluate available solutions and ensure a smooth transition towards S/4HANA.

As Senior SAP S/4HANA AP/AR & Business Partner Expert you will advise business teams on SAP S/4HANA Accounts Payable, Accounts Receivable, Business Partner and Customer Vendor Integration (CVI); assess differences between ECC and S/4HANA, recommend standard solutions and evaluate impacts on master data and P2P/O2C processes; and support business stakeholders through functional guidance, knowledge transfer, testing activities and validation of implementation partner recommendations.

You have strong functional expertise in SAP FI-AP, FI-AR, Business Partner and CVI, including customer and supplier master data; proven experience with SAP S/4HANA, ideally involving ECC to S/4HANA migrations and integration with MM/SD processes; and excellent communication and stakeholder management skills. Fluent English is required; Dutch is a strong advantage. The offer includes the opportunity to contribute to a large-scale SAP S/4HANA transformation within a leading financial services organisation, a long-term freelance assignment starting in January 2027, and a Brussels-based assignment offering strong business exposure.