About Guillaume
French
Native or bilingual
English
Fluent
Spanish
Basic
Experience
- Groupe LGMGRC Cybersecurity EngineerSeptember 2023 - Today (2 years and 9 months)Vélizy-Villacoublay, FranceDefinition and steering of cybersecurity strategy: implementation of an ISMS (ISO 27001), coordination of business continuity plans (BCP), crisis management and continuity plan to ensure operational resilience.Risk governance: conducting EBIOS RM analyses, defining and implementing security measures, monitoring via a GRC tool (Tenacy) for centralized and traceable risk management.Security audits: conducting internal audits and supplier evaluations, with action plans and concrete recommendations.Writing Security Assurance Plans (SAP) to frame security requirements in projects and partner relationships.✅ Structured approach, focused on compliance, business continuity, and security performance.
- AccentureSecurity Delivery Senior AnalystMarch 2022 - August 2023 (1 year and 6 months)Paris, FranceIntegration of security into the project during the deployment of an MDM (Master Data Management) solution for an international player in the luxury sector. Monitoring of measures to be implemented, review of security requirements, analysis of flows, technical and organizational recommendations.EBIOS RM risk analysis on critical legacy applications of the retail network (physical stores) for another luxury player: identification of vulnerabilities, threat modeling, proposal of risk treatment plans aligned with business objectives.🎯 Demanding context, high sensitivity to confidentiality, integration of business constraints into the security approach.
- ATOSCybersecurity ConsultantCONSULTING AND AUDITSMarch 2020 - November 2021 (1 year and 9 months)Bezons, FranceSupporting organizations in securing their information systems through:EBIOS RM risk analysis: identification of threat scenarios, impact assessment, and recommendations adapted to each business context.CISO support: operational support to the Security Officer (steering cybersecurity strategy, incident management, awareness).GDPR compliance: audit, mapping of processing activities, documentation writing, and compliance support.Consulting on ISMS implementation (ISO 27001): structuring security governance, defining policies and processes, preparing for certification.✅ Pragmatic, results-oriented approach, adapted to the needs of SMEs, mid-sized companies, and public institutions.
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Education
- Master 2 MIAGEUniversité Paris Dauphine2019Informatique appliqué à la gestion d’entreprise
Certifications
- PECB Certified ISO/IEC 27001 AuditorPECB2021
- PECB Certified EBIOS Risk ManagerPECB2021