Freelancer profile translated to English.

Description

Systems & Network Administrator with over 6 years of experience in managing, administering, and securing IT infrastructures. I work with Linux and Windows environments, VMware virtualization platforms, corporate networks, backup solutions, web servers, as well as cloud and hybrid infrastructures.

Accustomed to managing critical production environments, I focus on service availability, task automation, monitoring, security, and continuous infrastructure improvement. I also enjoy designing internal tools to simplify operations and optimize processes.

Autonomous, rigorous, and problem-solving oriented, I fully commit to each mission to provide reliable, sustainable, and customer-needs-adapted solutions.

Industry field of expertise

Languages

French
Native or bilingual
English
Native or bilingual
Arabic
Native or bilingual

Workplace preferences

Can work on-site

Lyon (up to 50km)

DDO Organisation
Technical IT Manager (Permanent Contract)
October 2024 - December 2025 (1 year and 2 months)
Toulouse, France
Missions:

Administration and operational maintenance of a multi-client production infrastructure.
Administration of approximately 1,200 VMware ESXi virtual machines.
Management of Windows Server and Linux infrastructures.
Administration of Active Directory, Microsoft 365, Exchange, and Microsoft Entra ID (Azure AD) environments.
Administration of network infrastructures: VLAN, routing, switching, DNS, DHCP, and VPN.
Administration and security of pfSense firewalls and network infrastructures.
Management of SSL/TLS certificates (Let's Encrypt, Sectigo) and automation of their renewal.
Deployment, migration, and maintenance of web servers (Apache, Nginx).
Administration of VMware ESXi virtualization platforms and storage solutions.
Administration of backup and storage solutions (Veeam, Ceph, NAS, SAN).
Diagnosis and resolution of critical incidents in a production environment.
Automation of administration tasks with Python, Bash, and PowerShell.
Development of an internal administration portal (Django / React) for infrastructure management.
Implementation of inventory, monitoring, and documentation tools.
Participation in migration, industrialization, and continuous improvement projects.
Level N2/N3 technical support for internal teams and clients.

Technical Environment:

VMware ESXi / vSphere
Windows Server / Linux (Debian, Ubuntu)
Microsoft 365
Exchange
Microsoft Entra ID (Azure AD)
Active Directory
pfSense
Apache / Nginx
Docker
Jenkins
Ceph
Veeam Backup & Replication
PostgreSQL / MariaDB / MySQL
Python
Bash
PowerShell
Django
React
Git
DNS / DHCP / VLAN / VPN
SSL/TLS (Let's Encrypt, Sectigo)
BGP Virtualization Task Automation Project Management VMware vSphere
Corteva
System and Network Administrator - Freelance
August 2024 - October 2024 (2 months)
Toulouse, France
Microsoft 365 / Active Directory / Microsoft Entra ID (Azure AD) Administrator – Corteva (2-month assignment) – Toulouse

Missions:

Administration of Microsoft 365 environments.
User account lifecycle management (creation, modification, deactivation).
Administration of Microsoft 365 licenses and service assignment.
Administration of Microsoft Entra ID (Azure AD): users, groups, roles, and access.
Management of security groups and permissions.
Administration of Active Directory (creation and management of accounts, groups, and organizational units).
Identity synchronization between Active Directory and Microsoft Entra ID.
User support for Microsoft 365 services.
Diagnosis and resolution of incidents related to authentication and access.
Documentation of administration procedures.

Technical Environment:

Microsoft 365
Exchange Online
Microsoft Entra ID (Azure AD)
Active Directory
Windows Server
PowerShell
Microsoft Teams
SharePoint Online
OneDrive for Business
Azure Cloud Active Directory Microsoft Entra ID Microsoft SharePoint Microsoft Office
SCM
System and Network Administrator
DIGITAL AND IT
April 2024 - August 2024 (3 months)
Strasbourg, France
Systems & Cybersecurity Administrator – CSM (Assignment) – Strasbourg

Missions:

Conducting cybersecurity audits and analyzing infrastructure vulnerabilities.
Participation in strengthening information system security.
Administration and support of the Mitel MiCollab telephony solution.
Configuration and security of IP telephony solutions.
Administration and hardening of firewalls (rule management, filtering, access control).
Implementation of network security best practices.
Administration of Microsoft 365 (user, license, and security management).
Identity and access management with Microsoft Entra ID (Azure AD).
Technical support and resolution of infrastructure and security incidents.
Documentation of technical procedures and security actions.

Technical Environment:

Microsoft 365
Microsoft Entra ID (Azure AD)
Exchange Online
Mitel MiCollab
Firewalls (Fortinet / Sophos / Stormshield / Cisco depending on the environment)
Windows Server
Active Directory
DNS / DHCP
PowerShell
Microsoft Azure Microsoft Entra ID DNS Microsoft Intune Azure Active Directory

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Higher Technician in Computer Networks
istcom - Tunisia
2014
Administrator of Secure Infrastructures
M2i - Lyon
2023

Yassine T.

System and Network Administrator

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