About Guillaume
English
Fluent
German
Basic
French
Native or bilingual
Italian
Basic
Experience
- EDFSAP ArchitectENERGY AND UTILITIESJanuary 2025 - June 2025 (5 months)Colombes, FranceMigration of the SIMM billing application for 24 million customers and its infrastructure to a new datacenter compliant with NIS2 security standards on premiseDefinition of 8 DATs:Application components, Network and security flow diagram on ArchiMateHardware resource table (servers, VLANs, DNS, etc.)Risk and security study.Network performance improvement study.Participation in the validation of network and security architectures, RUN Change performance analyses.Technical and economic study of the perimeter infrastructure solutionsScope:• SAP CRM 7, SAP ISU ECC 6, SAP EP, SAP S/4 HANA, SAP BW, SAP GRC, SAP BTP, SAP RISE• Databases: Oracle EXADATA, Oracle OEM, SAP HANA• High availability: VMware Cluster, Oracle Dataguard, Oracle RAC, RHEL Cluster, SAP HANA system replication• Security mechanisms (OKV, KMS, HSM, SAP DATA Custodian, Encryption)
- RHÔNE ENERGIE Raffinerie (porté par MERCER MARSH & MAC LENNAN FIRM)Implementation Project of a Time & Attendance Portal (FACTORIAL) and (Payroll) SILAECHEMICALSeptember 2024 - November 2024 (2 months)Fos-sur-Mer, FranceCurrent SAP Solution (SAP S/4 HCM, Success Factor & Fiori Portal) at EXXON MOBILE deep dive: Scoping and participation in configuration, specific SQL development, data migration to Entara Petroleum's HRIS (Front-End: Factorial Portal, Back-End: SILAE Payroll System)Functional scope:- Management of daily or shift workers' time (Planning, team, work schedule, configuration, ...),- HR Time and Attendance design for specific hourly rate increases (bonuses, back pay, 55 types of hourly compensations, paid or sick leave, RTT, delegation, DRIEETS exemptions) in the Factorial Portal transferred into the SILAE payroll application configuration.Technical scope:- Triggering of webservices and API certificates for the design of XML file transfer interfaces and metadata structures between the Factorial portal and the SILAE payroll back-end in a secure network protocol (OAUTH 2.0)- Data architecture mapping- Definition of hourly rates- Programming algorithms
- Safran Aircraft EnginesSolution and Technical Architect - SAP eWM MRO Implementation ProjectAVIATION AND AEROSPACEMarch 2024 - July 2024 (5 months)Corbeil-Essonnes, FranceFunctional project scoping: study of functional gaps in the ERP to trigger functional flows in the satellite, enterprise architecture (business functions / standard SAP flowsTechnical scoping: sizing study and construction of on-premise platforms (client-server, storage array) version to install (functional and technical study), interfaces, mobility (barcode scanner and RFID gun), ZEBRA barcode printer, SAP ID RFID Infrastructure implementation of stackers and interfaces
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Education
- Master - IT&FinanceCNAM2001
- EngineerUniversité de Technologie de Troyes1999