À propos de Guillaume
Français
Bilingue ou natif
Expériences
- DecathlonHead of Information Security FranceCOMMERCE DE DÉTAILjanvier 2023 - Aujourd'hui (3 ans et 5 mois)Paris, FranceContext : Job creation, 20K+ users, Full-Cloud (GCP, AWS, ...) Mission : Setup and animate the Information Security program at country level. Activities : Procurement IS Risk assessment, Security Insurance Plan negotiation, Security Controls animation with Product Owners (invariants, DRP, Risk Assessment, Crisis Management), Information Security SME for Business. Functional animation of local Security Officers & Sécurity Champions.
- Keolis Dijon MobilitésChief Technology Officer - Chief Information Security Officermai 2018 - janvier 2023 (4 ans et 8 mois)Sand, France• Context: First multimodal Public Service Delegation agreement in France, covering Tramways, Buses, Bikes, Bike Parks, On-street and Off-street Parkings, Vehicle Pound.• Mission : Main objective upon arrival was to stabilize the IS since it grew instantly when new services joined the contract agreement on Jan 1st 2017 *Team management: 3 direct reports*200 users, 700 employees, 100 VMs, 100+ apps *Interactions : Public Transport Authority, KEOLIS Group (Ops & Security)Main achievements : *Cybercrisis training with COMEX (tabletop) *Contributed to Operational Support System's renovation *Contributed to RFP for 2023-2029 contract (1.7M€ CAPEX, 3M€ OPEX under management) *Performed ISO27001 flash audit internally *Updated/created processes to ensure change management and improve global quality of services *Inventory (hardware-software assets, vendors, datacenters, contracts, web apps, telecom, …) *Strengthened partnership with KEOLIS Group IT (Pilot : O365 migration, Polycom Visio solution, Enterprise Architecture) *Security baseline enforcement: *AV+EDR (Microsoft Defender for Endpoint, Crowdstrike Falcon) *Encryption (MS Bitlocker) *MFA (Microsoft Azure AD) *Network segregation *Security Awareness *PAM *MDM covering 100% smartphones *Next Gen Firewall rules clean-up *Dashboard & Reporting : created templates for monthly report from manager to N+1• TETRA Radio system integration (interconnected with Dijon's Command Center) *Refreshed and expanded Wifi service (Industrial / Corporate / Employee/ Guests) *Operations Command Center relocation within OnDijon (Dijon's « Smart City » mutualized Command Center (infrastructure, server room, end-user hardware, visionconference) *O365 Migration *IS Supervision : Migrated from Centreon to PRTG : from 200 sensors to 2500 selected sensors, Hardware-centric approach then Service-centric approach, Custom-maps designed for specific technical teams within Keolis Dijon.
- CHU DIJONDeputy Head of IT Operationsavril 2016 - septembre 2016 (5 mois)Sand, France6 years 3 monthsDeputy Head of IT OperationsApril 2016 - September 2016 (6 months)Dijon Area, FranceIn charge of department operational & performance improvment * Refined deployment and change processes (ITIL V2 standard) * Management of 6 people (Technicians & Engineers) & external (depending upon projects).
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Formations
- Master's degree, TelecommunicationsINSA Lyon - Institut National des Sciences Appliquées de Lyon2004Master's degree, Telecommunications
- Exchange Program, Computer Science & Electrical EngineeringNational University of Singapore2004Exchange Program, Computer Science & Electrical Engineering