About Thierry
French
Native or bilingual
English
Fluent
Experience
- EXPLEO GROUPSenior Cybersecurity ConsultantNovember 2023 - October 2025 (1 year and 11 months)Senior cybersecurity consultant in Defense, Space, and Aeronautics sectors.• Conducted a risk analysis for satellite ground segment asset lifecycle management platforms, in accordance with ISO 27005:2022 using the EBIOS RM methodology, with analysis of the system's security architecture. Review of the compliance baseline and associated requirements. Review of regulatory frameworks.• Supported the security accreditation of military aircraft safety maintenance systems. Managed compliance with security requirements. Defined a secure system architecture. Defined safety maintenance procedures.• Internal R&D activity on advancements in post-quantum cryptography.
- GTD InternationalInformation Security OfficerDIGITAL AND ITJuly 2022 - October 2023 (1 year and 3 months)Responsible for the information security governance of GTD International, risk and compliance management. Responsible for security management for GTD International clients and projects.Mission:• Advise and assist Management, and the Information Systems Department, in defining information systems security policies;• Draft and maintain the necessary documentation to conduct security accreditation procedures from start to finish. (Accreditation strategy, Risk assessment, PES, …);• Organize and lead governance meetings;• Support project managers in considering various security frameworks (RGS, IGI1300, II901, LPM…);• Control and ensure compliance with security requirements for the accredited site;• Conduct risk analysis and assessment;• Risk management (EBIOS, EBIOS RM, ISO27005).• Implement a continuous improvement plan for the ISMS;• Contribute as a Security expert to secure IS architecture committees;• Lead technical and organizational initiatives related to information security;• Participate in employee awareness and training;• Supervise internal, external, and certification audits;• Maintain active monitoring of regulatory requirements applicable to classified networks within the company's scope.Activities 2022 – 2023:• Renewal of the company's ISO 27001 certification;• Definition of a security architecture (system and network) for the company's sensitive information systems.• Definition, review, and validation of security requirements for Defense and Space sector clients' projects.Areas of activity: ✓ Defense; ✓ Space; ✓ Development.
- SCALIANSenior Cybersecurity ConsultantJanuary 2020 - June 2022 (2 years and 5 months)Riyadh Saudi ArabiaSenior cybersecurity consultant on assignment for clients in the banking, space, and railway sectors on topics related to governance, risk management, compliance, and IS design and architecture.Riyadh Metro:• Risk analysis ISO 27005 / EBIOS 2010• Analysis of system and network security architectureVarious projects and internal:• IS security governance• IS security accreditation• Risk management• Compliance management• Definition, analysis, and review of system and network architecture• Integration of cybersecurity into projects• Definition of sensitive IS security architecture.• Crisis managementAreas of activity: ✓ IT Service Company ✓ Railway ✓ Banking ✓ Space ✓ Tertiary
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Education
- Level III TitleCESI Mont Saint Aignan2002Analyste Programmeur
Certifications
- ISO 27001 Lead ImplementerPECB2025