SAP Domain Architect Supply Chain Management (SCM)

About the shERPa Project NMBS is undergoing a company-wide transformation through the shERPa program, implementing SAP S/4HANA as a greenfield solution. This program will standardize processes, improve operational efficiency, and enable digital transformation across all business units — including Supply Chain, Rolling Stock maintenance, Infrastructure and Operations. Job Purpose We are seeking a highly experienced Senior SAP Domain Architect Supply Chain Management (SCM) to define and lead the target architecture for NMBS’s end-to-end supply chain processes.

This includes Demand en Supply Planning across all planning horizons (log-, mid- and short term), Inventory & Warehouse Management, Procure-to-Pay (P2P), Logistics Execution, and the Maintenance Supply Chain — all in the unique context of NMBS responsible for safety-critical materials, rolling stock availability, Finance, HR and Customer Relations. You will design the future-state SCM architecture on SAP S/4HANA, ensuring strong integration with Maintenance (PM), Finance, Engineering, and NMBS's depot logistics.

You will guide complex transformations and support NMBS in building a resilient, transparent, and regulatory-compliant supply chain. This vacancy is for a payroll profile Key Responsibilities Define the S/4HANA SCM target architecture tailored to NMBS’s depot operations, rolling stock maintenance flows, critical spare parts management, and logistics constraints. Lead full lifecycle S/4HANA SCM implementations as Domain Architect.

Own solution design for Inventory Management (IM), , Warehouse Management (Stock room management/EWM), Transportation Management (TM) and SAP Business Network for Supply Chain. Optional Integrated Business Planning (IBP), Manufacturing and integration with PM Architecture integrations with all the relevant systems within SCM and S/4HANA Model processes and enterprise capabilities with ADOIT or ARIS for governance and compliance. Lead workshops with senior stakeholders (Supply Chain, Rolling Stock, Infrastructure Engineering, Finance).

Oversee the results of the delivery teams, validate design decisions, and ensure adherence to future-state architecture. Guide integration supporting safety-critical stocking policies, long lead-time parts, multi-depot inventory, and material traceability. Support project execution using ServiceNow, Jira, Xray, Cloud ALM and Solution Manager.

The candidate demonstrates proficiency at CEFR level C1 or C2 in Dutch or French, and at least CEFR level B1 in English. The candidate has a minimum of 15 years of professional experience in SAP Supply Chain Management including SAP MM (basic), Inventory Management (IM), Warehouse Management (WM or EWM), mobile warehouse solutions, automated warehousing solutions, Transportation Management, and integration with SAP Plant Maintenance (PM).

The candidate has led at least one full lifecycle SAP S/4HANA implementation project in the role of Domain Architect, supported by evidence in the CV or project references. The candidate has professional experience in at least one asset-intensive, logistics-intensive, or regulated industry (e.g. rail, utilities, or MRO). The candidate demonstrates professional experience with SAP Ariba and/or supplier collaboration platforms.

The candidate demonstrates advanced professional experience with the enterprise architecture tools ADOIT and/or ARIS. The candidate confirms availability to work onsite in Brussels (near Brussels-Midi station) at least two days per week.

Our offer

• At Ypto, you’ll join an open corporate culture and contribute to our digital transformation.
• You’ll work in a role with real social impact and plenty of room to make your own mark.
• Alongside a healthy work-life balance and a competitive salary, we offer: hybrid working , with a balanced weekly mix of office and remote work , combined with flexible hours 35 days of annual leave a mobility package with a company car (also available via our mobility plan) or alternative mobility choices , complemented by a public transport season ticket a target bonus a comprehensive insurance package , with hospitalisation and dental care for the whole family coverage of outpatient medical costs group insurance , including a supplementary pension (cafeteria plan) meal vouchers & eco vouchers net allowances for hybrid working and an internet allowance