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Mehdi GuendouzMG

Mehdi Guendouz

Cybersecurity Engineer

€450/day
Levallois-Perret, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Mehdi

Cybersecurity & SecOps Engineer | Incident Response | Microsoft 365 & Azure
Passionate about cybersecurity and information system protection, I have 5 years of field experience acquired through apprenticeships within an IT consulting company.

My career path is marked by constant evolution: I started as a System & Network Technician, then Administrator, before fully specializing in my current role as Cybersecurity & SecOps Engineer. This progression allows me to have a 'defender' vision rooted in a real understanding of hybrid infrastructures.

My areas of expertise include:

Security Operations (SecOps) & Incident Response: Cyber crisis management, attack analysis (phishing), and OSINT/DFIR investigations.

Vulnerability Management & SIEM: Deployment and investigation on Wazuh, Nessus scans, Microsoft Defender alert management, and patch application.

Modern Workplace & IAM: Securing environments (Endpoint Hardening) via Microsoft Intune and managing identity lifecycles on Entra ID (Azure AD).

Governance (GRC): Preparing infrastructures for ISO 27001 audits and facilitating security committees to raise team awareness.

Currently pursuing a Master's degree in Information System Security (Bac+5) at Sup de Vinci, I continue to deepen my technical and strategic knowledge. I am always open to exchanges with other enthusiasts and professionals in the sector!

Feel free to contact me to discuss cybersecurity, infrastructure, or any other tech topic.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • MCA
    System and Network Technician
    August 2021 - August 2023 (2 years)
    Levallois-Perret, France
    Provided N1/N2 technical support to users
    and actively participated in improving the internal infrastructure.

    Main missions:
    - Diagnosis and resolution of system and network incidents
    - Deployment and administration of the FOG cloning tool
    for IT park management
    - Setup and administration of Passbolt
    (open-source password manager)
    - Automation of administration tasks via PowerShell
    - User support and escalation to N3 teams
    IAM Vulnerability Management SIEM Microsoft Defender Crisis Management
  • MCA
    System and Network Administrator
    September 2023 - September 2024 (1 year)
    Administration and modernization of the company's
    systems and networks infrastructure.

    Main missions:
    - Migration and integration of Microsoft Intune
    for park management (MDM/MAM)
    - Administration of Microsoft Entra ID
    (formerly Azure AD) and identity management
    - Deployment and administration of Microsoft Defender
    for endpoint security
    - Application deployment via Intune across the park
    - Scripting and automation of administration tasks
    - Work on Microsoft 365 / Azure cloud environment
  • MCA
    Cybersecurity Engineer
    September 2024 - Today (1 year and 9 months)
    Managed operational security and implemented
    a complete cybersecurity infrastructure.

    Main missions:
    - Deployment and administration of a SIEM (Wazuh)
    including scripting of custom detection rules
    - Vulnerability management: internal audits with Nessus,
    PingCastle, Purple Knight — analysis, prioritization, and remediation
    - Patch management automation (AutoPatch)
    and automated comparative report generation
    - Endpoint hardening: LAPS deployment,
    security policies
    - Risk analysis, exception management,
    and incident/vulnerability traceability
    - Technological watch with automatic comparison
    of CVEs vs server park
    - Drafting and application of security policies

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