OG

Olivier GEMAYEL

Available to hire

I am Olivier Gemayel, a SAP Data Migration Project Manager with over two decades of experience helping large organizations move to SAP S/4HANA and modern data architectures.

About

I am Olivier Gemayel, a SAP Data Migration Project Manager with over two decades of experience helping large organizations move to SAP S/4HANA and modern data architectures. I excel in identifying functional requirements, scoping, and designing architectures; I combine technology and business insights to deliver data migration programs on time and within budget. I thrive in cross‑functional environments, guiding data governance, data quality, interfaces, and roadmap delivery across complex ERP landscapes.

I lead diverse teams, manage data quality and governance, and implement interfaces and automations. My hands‑on expertise spans ABAP considerations, C#, LSMW, BAPI, SAP Cockpit, and MCO/maintenance of BI systems. I’m comfortable with AI‑assisted validation, RPA (UIPath), and advanced data validation, always aiming for traceability, documentation, and repeatable success across Development, QA, and Production environments.

  • 23 years' experience
  • Joined December 2025

Languages

  • FrenchFluent
  • EnglishAdvanced

Industry experience

  • Software & Internet
  • Professional Services
  • Manufacturing

Work experience· 10 roles

Senior Expert – Data Migration SAP S/4HANA · EuropcarNov 2023 – Jun 2025 · 1 yr 8 mos

Continuation of Europcar migration project; governance of data scope, interfaces, and data quality across SAP S/4HANA implementation; ongoing ABAP and C# integration work.

Senior Expert – Data Migration SAP S/4HANA · EuropcarNov 2023 – Jun 2025 · 1 yr 8 mos

Migration from Oracle and SAP ECC6 to SAP S/4HANA; ABAP development, C# integration, and intelligent automation; LSMW on FI/CO/MM/PP/SD with error controls; AI-assisted data validation and automatic documentation across environments.

Project Specialist – Data Migration · SynvanceFeb 2023 – Nov 2023 · 10 mos

Senior Expert role continued with data migration program governance and cross‑functional coordination; automation and data validation strategies.

Solution Manager EPM – Data Migration · SynvanceFeb 2023 – Nov 2023 · 10 mos
Supervisor – EPM Solution – Data Migration · SynvanceJun 2022 – Feb 2023 · 9 mos
Senior Manager Consultant - Tagetik & EPM – Data Migration · TagetikJan 2022 – Jun 2022 · 6 mos
Consolidation Consultant – Data Migration · SafranSep 2017 – Dec 2021 · 4 yrs 4 mos
Consolidation Consultant – development Engineer – Data Migration · TotalSep 2005 – Jul 2017 · 11 yrs 11 mos

Education

Master’s Degree in Computer Science · Université Pierre Mendès France, St Martin d’Hères2030 – 1999
Diploma in Accounting and Financial Studies (DECF) · Université Pierre Mendès France, Grenoble2030 – 1998

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