SAP FICO S/4HANA Conversion Expert

Job description: We are seeking experienced S/4HANA Conversion Expert with deep techno-functional SAP FICO expertise to support a complex ECC to S/4HANA migration within a large retail enterprise. This role requires hands-on experience in system conversion projects, financial data migration, simplification item list, functional design, and close collaboration with technical, business, and architectural teams.The ideal candidate has successfully delivered end-to-end S/4HANA system conversions, understands the intricacies of Finance data and has worked in high-volume retail environments with large transactional footprints, complex integrations, and strict downtime constraints (including NZDT/Near-Zero-Downtime concepts).Tasks:- Identify and resolve pre-conversion inconsistencies in General Ledger, Asset Accounting & Material Ledger

• Drive Simplification Item evaluation and remediation, especially across Finance and Retail-specific processes
• Translate complex business requirements into functional and technical specifications.
• Troubleshoot Finance-related issues during conversion cycles (Sandbox, Development, Dress Rehearsals, Mock Conversions).
• Work closely with ABAP, Basis, and Data Migration teams to resolve conversion errors, performance issues, and custom code adaptations.
• Collaborate across multiple retail systems POS, OMS, Merchandising, eCommerce, Warehouse/Logistics, and external suppliers.
• Assess ECC system integrations impacted by the S/4HANA conversion and drive interface remediation and redeline with S/4HANA architecture and best practices.
• Define conversion test strategy (unit, E2E, finance reconciliation, cutover mock cycles).
• Execute data reconciliation, financial statement validation, and root-cause analysis of discrepancies.
• Lead finance-specific cutover activities and ensure alignment with the overall program timeline.
• Participate in Design Advisory, Data Migration boards, and Conversion Working Groups.
• Provide expert guidance to business stakeholders, functional analysts, and technical teams. Produce high-quality documentation, conversion design, data maps, troubleshooting logs, reconciliation reports, post-migration controls, and SOPs.Period: 2026-02-01 - 2026-07-31Location: Stockholm, working onsite