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Adam ChaabaneAC

Adam Chaabane

Network and Security Systems Administrator.

€300/day
Paris, FR
0-2 years
Active Directory
System and Network Administration
Cybersecurity
Virtualization: VMware, Hyper-V, Proxmox, VirtualBox, Gns3
IT Outsourcing

Average response time: 1 hour

Freelancer profile translated to English.
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About Adam

Server down, network failure, security breach? I intervene within 1 hour, 7 days a week, for your critical incidents.

Expertise covering Windows & Linux system administration, network infrastructures, security (audit, intrusion, hardening), and virtualization (VMware, Hyper-V, Proxmox). Remote or on-site in the Paris region, report provided after each intervention.
Digital and IT Services

  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Paris (up to 50km)

Experience

  • Fondation Œuvre Croix Saint Simon,
    Network and Security Systems Administrator.
    October 2023 - November 2025 (2 years and 1 month)
    75019, Paris, France
    • - Infrastructure supervision via Zabbix and reduction of critical incidents
    • - Administration of Windows Server and Linux environments (Debian, Red Hat, CentOS)
    • - Active Directory administration and DNS, DHCP exploitation
    • - Incident and user request management (L2/L3) with SLA compliance
    • - Change tracking, documentation, and inventory via GLPI
    • - Collaboration with security teams and ISO 27001 compliance
    • - Exploitation of HarfangLab EDR alerts and security incident handling
    • - Cisco network administration (switching, VLAN, STP, LACP, Wi-Fi WLC)
    • - Fortinet and Stormshield firewall administration (filtering, NAT/PAT, IPsec/SSL VPN, HA)
    • - Vulnerability management, patch planning, and CERT alert monitoring
    • - VMware vSphere environment administration and ESXi cluster management
    • - Backup and restore management via Veeam
    • - Storage infrastructure management (QNAP NAS, SAN, iSCSI, vSAN)
    • - Microsoft 365, Azure, and Google Workspace environment administration (GCDS, AD sync)
    • - SSL certificate updates and service security maintenance
    • - Multi-site VoIP line management (call plan, call forwarding, users)
    • - Task automation via PowerShell, Ansible, and Python (AD, scripts, deployments, reporting)
    • - Workstation deployment via MDT
    • - Critical user incident diagnosis and resolution
    • - Management of infrastructure migration and renewal projects
    • - Participation in anti-phishing awareness campaigns and anti-spam management (BlueSecure, Vade)
    • - Strengthening security and hardening Active Directory according to ANSSI guidelines
    Scripting System and Network Administrator Linux Server Firewall Storage Management
  • OpinionWay,
    Network and Security Systems Administrator.
    January 2023 - April 2023 (3 months)
    75003, Paris, France
    • - Implementation of backup plans (Veeam)
    • - Configuration and deployment of Intune MDM with Azure AD Connect
    • - Deployment of BitLocker encryption.
    • - Automation of PowerShell scripts.
    • - Creation of new FortiGate firewall rules
    • - Monitoring, analysis, and optimization of security alerts via the Graylog SIEM
    • - Writing technical procedures
    • - Creation of user accounts and AD rights management
    • - Creation and deployment of GPOs and PowerShell automation
    • - Analysis and investigation of security anomalies detected by Darktrace
    Active Directory Office 365 Administration SIEM System and Network Administrator Firewalling
  • XEFI,
    Work-study in Systems, Networks, and Security Technician
    August 2020 - August 2022 (2 years)
    92100 Boulogne-Billancourt, France
    • - L1/L2 Support, CRM ticket management.
    • - Responding to user requests and incidents
    • - Installation and configuration of servers, firewalls, routers, switches
    • - Sophos Firewall configuration and administration
    • - Email migration to Office 365 (Exchange)
    • - Outlook / Office 365 email configuration
    • - PRTG server monitoring, alert resolution
    • - Renewal of IT equipment for various clients
    • - Migration of local server data or Datacenter cloud
    • - Data and server backup and restore with Acronis
    Customer Service Microsoft Exchange Monitoring Computer Hardware Installation Data Migration

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Education

  • Expert in System, Network, and Security Architectures Level 7
    ESGI
    2025
    Expert en architectures Système, Réseaux et Sécurité Niveau 7
  • System, Network, and Security Administrator Level 6
    IPREC
    2022
    Administrateur Systèmes, Réseaux et Sécurité Niveau 6
Check out Adam's education

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