Senior SAP S/4HANA Conversion Expert

Avaron AB is a growing consultancy focused on technology, finance, and business support. We match your expertise with the market's most interesting assignments, offering a platform where your professional development is central.

We are looking for an experienced S/4HANA Conversion Expert with strong techno-functional SAP Finance (FICO) expertise to support a complex ECC to S/4HANA system conversion within a large retail environment. You will work hands-on across conversion cycles, Finance data migration, and simplification items, collaborating closely with technical teams, architects, and business stakeholders in an integration-heavy landscape with strict downtime constraints (including near-zero downtime concepts).

• Identify and resolve pre-conversion inconsistencies across General Ledger, Asset Accounting, and Material Ledger
• Drive Simplification Item evaluation and remediation, with a focus on Finance and retail-specific processes
• Translate business requirements into functional and technical specifications
• Troubleshoot Finance-related issues across conversion cycles (sandbox, development, dress rehearsals, mock conversions)
• Collaborate with ABAP, Basis, and Data Migration teams to resolve conversion errors, performance issues, and custom code adaptations
• Work across connected retail systems such as POS, OMS, merchandising, eCommerce, warehouse/logistics, and external suppliers
• Assess impacted ECC integrations and drive interface remediation and redesign aligned with S/4HANA architecture and best practices
• Define conversion test strategies, including unit tests, end-to-end tests, finance reconciliation, and cutover mock cycles
• Execute data reconciliation, validate financial statements, and perform root-cause analysis of discrepancies
• Lead finance-specific cutover activities in alignment with the overall program plan
• Contribute to design advisory forums, data migration boards, and conversion working groups
• Provide guidance to stakeholders, functional analysts, and technical teams
• Produce conversion documentation such as designs, data maps, troubleshooting logs, reconciliation reports, post-migration controls, and SOPs

• Deep techno-functional SAP Finance (FICO) expertise
• Hands-on experience delivering end-to-end ECC to S/4HANA system conversion projects
• Strong experience with Finance data migration and financial reconciliation/validation
• Experience working with Simplification Item evaluation and remediation in S/4HANA conversions
• Ability to troubleshoot finance-related conversion issues across multiple conversion cycles
• Proven collaboration with ABAP, Basis, and Data Migration teams in complex conversion programs
• Experience working in high-volume retail environments with complex integrations and strict downtime constraints, including near-zero downtime concepts

• Experience assessing and redesigning ECC interfaces in line with S/4HANA architecture and best practices

Selections are made on an ongoing basis, so we recommend that you apply as soon as possible.