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Guillaume CommandréGC

Guillaume Commandré

SAP Senior Architect & Project Manager

€900/day
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Guillaume

Guillaume has worked on various projects in international and multi-module SAP contexts. He has specifically undertaken missions of expertise in functional architecture and project management. He also has experience in business process, application, and technical architecture.
Guillaume has a strong ability to adapt to a rapidly and frequently changing technical and functional environment to ensure responsibilities concerning the secure coordination of SAP projects. His organizational talent, customer service orientation, and advice allow him to guarantee all projects on time, within scope, and within the initially established budget.
Guillaume practices an End-to-End architecture approach. He begins by defining the needs of business owners and analyzing the value of the existing architecture during the opportunity gathering phase. For each functional solution, he studies the processes to define the functional use cases in order to determine the target predictive data volumes, which allows him to define HANA architectures: HCI for low data volumes in transit or HCP for high volumes. He writes the Technical, Functional, and Security Architecture Dossiers (infrastructure sizing) during the blueprint phase. He provides a realization plan (tasks, workload, and milestones). He drafts a Business Case in two parts: project cost with its return on investment (ROI) and cost of maintaining operational condition (TCO) with linear infrastructure depreciation. All these deliverables are submitted to GO/NO GO before the realization phase. Finally, he writes the Exploitation Dossiers at the end of project realization, which become contractual with a managed service provider for TMA.
  • English

    Fluent

  • German

    Basic

  • French

    Native or bilingual

  • Italian

    Basic

Can work on-site
Paris (up to 50km), Lyon (up to 50km), Montpellier (up to 50km), Nice (up to 50km), Toulouse (up to 50km)

Experience

  • EDF
    SAP Architect
    ENERGY AND UTILITIES
    January 2025 - June 2025 (5 months)
    Colombes, France
    Migration of the SIMM billing application for 24 million customers and its infrastructure to a new datacenter compliant with NIS2 security standards on premise
    Definition of 8 DATs:
    Application components, Network and security flow diagram on ArchiMate
    Hardware 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 solutions
    Scope:
    • 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) SILAE
    CHEMICAL
    September 2024 - November 2024 (2 months)
    Fos-sur-Mer, France
    Current 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
    HRIT HRIS SAP S/4 HCM SAP FIORI SAP SuccessFactors
  • Safran Aircraft Engines
    Solution and Technical Architect - SAP eWM MRO Implementation Project
    AVIATION AND AEROSPACE
    March 2024 - July 2024 (5 months)
    Corbeil-Essonnes, France
    Functional project scoping: study of functional gaps in the ERP to trigger functional flows in the satellite, enterprise architecture (business functions / standard SAP flows

    Technical 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&Finance
    CNAM
    2001
  • Engineer
    Université de Technologie de Troyes
    1999

Skill set (44)

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