About Denis
French
Native or bilingual
English
Native or bilingual
Experience
- AlgoliaChief Security OfficerTECHJanuary 2019 - December 2025 (6 years and 11 months)Paris, FranceContext: SaaS, scale-up, high growth, international
Strategy, Governance, and Risk
- Definition and execution of a comprehensive cybersecurity strategy aligned with business objectives, risk appetite, and regulatory requirements.
- Establishment and management of a complete security governance framework (policies, standards, decision-making principles, risk acceptance workflows).
- Management of the company's cyber risk management program: risk register, assessments, mitigation strategies.
- Definition and monitoring of key indicators (KPI/KRI) and decision-making reporting on risk posture, program progress, and investment needs.
Security Engineering and Operations
- Technical reference for architecture and engineering: integration of Security-by-Design and Privacy-by-Design in the SDLC, identity management, and data protection.
- Supervision of the operational ecosystem, including incident response and crisis management.
- Integration of security into projects, change management, and engineering workflows.
Compliance and Audit
- Leadership of compliance programs (ISO 27001, SOC 2 Type II, BSI C5), including design, certification audits, and continuous monitoring.
- Translation of regulatory requirements and frameworks into measurable controls.
- Coordination of security testing and remediation tracking.
- Maintenance of security documentation and compliance records.
Leadership, Business Enablement, and Culture
- Creation, development, and leadership of an international security team, including recruitment, mentoring, and organizational sizing.
- Cross-functional collaboration to align security with product and business objectives.
- Development of internal awareness and training programs.
- Communication: translating security challenges into strategic narratives for management.
- Groupe YmagisInformation Security ManagerFILM AND AVAugust 2013 - January 2019 (5 years and 5 months)Paris, FranceContext: Industry in transition, hyper-growth, international, media industry
- Role with a strong operational component, combining technical expertise and strategic management of security issues.
- Management of compliance measures related to media protection, including conducting security audits according to MPAA standards for distribution to major studios (before TPN structuring).
- Support for the digital transformation of the sector, with responsibility for the Security domain during the shift from a film-based industry to digital infrastructures.
- Design and security of complex network architectures covering heterogeneous environments (post-production, offices, VR immersive experiences), including the implementation of control and segmentation mechanisms (proxy).
- Definition and deployment of physical security strategies adapted to sensitive and high-value data centers and sites (laboratories, storage, immersive installations).
- Integration of regulatory requirements for personal data protection (GDPR), from impact analysis to their implementation in internal and client services.
- Management of the IT department and its resources during growth from 20 to 100 employees.
- YMAGISSystems and Network EngineerFILM AND AVJanuary 2009 - January 2013 (4 years)Paris, FranceContext: Industry in transition, hyper-growth, international, media industry
- Development, creation, deployment, and support of a client infrastructure for the deployment of digital cinema across Western Europe (1000 servers).
- Project management for the deployment of this infrastructure for the MK2 and UGC groups (60 sites).
- Management of the IT department and its resources during growth from 20 to 100 employees.
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Education
- University Diploma in Technology in Computer Science and Computer EngineeringIUT Orsay – University Paris XI1995D.U.T. Informatique et Génie Informatique
Certifications
- ISO/IEC 27001:2022 Lead AuditorMastermind2026
- ISO/IEC 42001:2025 Lead AuditorMastermind2026