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Mickael GuyotMG

Mickael Guyot

ISO 27001 Auditor | Externalized CISO | ISO27001

€980/day
1 project
Lille, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Mickael

With over 15 years of experience in cybersecurity (large groups, retail, banking/finance), I support companies in securing their systems, achieving ISO 27001 compliance, and deploying pragmatic cyber governance.

  • Governance & Strategy: Outsourced CISO management, roadmap, cyber leadership
  • Compliance & Audit: Internal ISO 27001 audits, risk treatment support, action plans, reporting
  • Operational & Technical: Vulnerability remediation plan management, data protection (classification, encryption, DLP)

My mission: Transform your business challenges into a posture of trust, adapt cybersecurity to your context, and enable you to move forward with confidence.

Sectors: Distribution / Retail, SaaS / Banking, Financial Services

I am based in Lille, also available for missions with occasional travel in France and Belgium, or remotely.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Lille (up to 50km), Paris (up to 50km), Lyon (up to 50km), Bruxelles (up to 50km), Bordeaux (up to 50km)

Experience

  • JOCX
    ISO27001 Auditor | Cybersecurity Consultant
    CONSULTING AND AUDITS
    October 2024 - Today (1 year and 8 months)
    Lille, France
    • Internal Audit ISO/IEC 27001
    • Part-time CISO
    • Cyber Roadmap Creation
    • Creation of a perimeter security plan to strengthen cybersecurity
    • Technical action plan management
    • Data Protection Project (Classification, Encryption, DLP)
    • Microsoft Threat Protection Project
    ISO 27001 Security Audit Cybersecurity Cybersecurity Cybersecurity Governance
  • ADEO (Groupe Leroy Merlin)
    Head of Cybersecurity
    RETAIL (LARGE RETAILERS)
    February 2023 - September 2024 (1 year and 8 months)
    Ronchin, France
    Head Of Cybersecurity:
    - Management of cybersecurity governance and strategy.
    - Risk analysis and development of treatment plans in response to business needs.
    - Facilitation of the implementation of the cybersecurity framework.
    - Management of tools and processes to defend the company against cyberattacks.
    - Advice to business teams to integrate cybersecurity into their projects.
    - Proposal of pragmatic solutions adapted to business issues.
    DevSecOps CISO Governance Cybersecurity Information Security
  • Groupe BPCE
    Member of CERT BPCE
    December 2020 - February 2023 (2 years and 2 months)
    Paris, France
    Monitoring & Detection: Use SIEM, IDS/IPS, and other cyber-surveillance tools to identify threats.

    Incident Response: Analyze alerts, qualify incidents, coordinate containment and remediation measures.

    Watch & Intelligence: Maintain a watch on new threats, vulnerabilities, and attacker tactics.

    Prevention & Hardening: Propose improvements to security procedures, configurations, and tools.

    Communication & Reporting: Document incidents, produce technical reports, and communicate with stakeholders.
    Incident Management Vulnerability Management Cybersecurity Hardening Security Audit

Reviews

5.0

Out of 1 rating

J

Jonathan

Compilatio SAS

Reviewed on 10/16/2025

Mickael perfectly met our expectations for the cybersecurity support mission (related to ISO 27001 standard): - mastery of the ISO 27001 standard; - good knowledge of our business and technical context: design and operation of a SaaS service; - advice adapted to our context; - effective communication with sufficient lightness and relaxation to move forward on these complex subjects.

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Education

  • Manager in Systems and Networks Engineering, Computer Engineering
    CESI School of Management Training
    2017
    Responsable en Ingénierie Systèmes et Réseaux, Ingénierie informatique
  • Higher Technician in Computer Maintenance and Support
    CESI Higher School of Apprenticeship
    2004
    Technicien Superieur en Maintenance et Support Informatique

Certifications

  • ISO 27001 Lead Implementer
    PECB
    2019
  • ITIL
    ORSYS
    2017

Skill set

Categories