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Christophe DumontCD

Christophe Dumont

Systems, Networks, and Cybersecurity Engineer

€500/day
Grenoble, FR
8-15 years

Average response time: 2 hours

Freelancer profile translated to English.
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About Christophe

Systems, Networks, and Security Engineer – CISSP
With over 20 years of experience, I specialize in the management and security of critical IT infrastructures. I combine rigor, technical expertise, and a performance-oriented approach to ensure reliable and secure environments.
My skills include:
Security and access management (PKI, Kerberos, IAM)
Automation and orchestration of Linux and network infrastructures
Monitoring, detection, and vulnerability management (OpenVAS, risk-oriented correlation)
I apply my expertise to projects that require reliability, security, and compliance, while bringing a practical and operational vision to reduce risks and optimize infrastructures.
“Available for infrastructure security missions, audits, automation, and risk-oriented technical support.”
  • French

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • European Synchrotron
    Linux Systems Engineer
    RESEARCH
    June 2025 - Today (1 year)
    Grenoble, France
    Redesign of the backup infrastructure for 650 servers – optimization, reliability, and security of critical systems.
    Member of the Cyber Working Group – participation in the development and prioritization of security initiatives, translating risk analysis into concrete and operational technical actions.
    Development of a risk-oriented vulnerability correlation engine – enabling prioritization of remediation actions based on actual impact on the infrastructure.
    Implementation of a PKI to secure identities.
    Greenbone Kerberos Openbao Bareos Prometheus
  • Groupe Yoni
    Systems, Networks, and Security Engineer
    SOFTWARE PUBLISHING
    January 2022 - June 2025 (3 years and 5 months)
    Grenoble, France
    Integration and administration of security solutions (SIEM, SSO, EDR) to secure critical infrastructures and ensure operational visibility.
    Vulnerability management and control implementation – identification, prioritization, and remediation of technical risks.
    Review and deployment of the group's IS Policy – translation of policies into secure and compliant operational actions.
    Participation in security audits – assessment of compliance and concrete recommendations to improve security posture.
    Identity and access management (IAM) – implementation and supervision of robust controls to protect sensitive systems and data.
    EDR Vulnerability Management IS Policy SIEM Keycloak
  • Groupe Yoni
    Systems & Networks Administrator
    June 2018 - December 2021 (3 years and 6 months)
    Grenoble, France
    Administration of Windows and Linux servers. Network administration. Industrialization of production deployments, design of scenarios, and execution of load tests on SaaS applications. Backup management. Infrastructure monitoring and alert processing. Documentation and procedure writing. User support.

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Education

  • Engineer in Systems and Software Architecture & Integration, Computer Science
    Conservatoire National des Arts et Métiers
    2021
    Ingénieur en Architecture & Intégration des Systèmes & Logiciels, Informatique
  • Systems & Networks Administrator, Computer Science
    Conservatoire National des Arts et Métiers
    2015
    Administrateur Systèmes & Réseaux, Informatique

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