Freelancer profile translated to English.
Back to original languageAbout Yassine
🔧 Systems, Networks & Cybersecurity Engineer | Microsoft 365 | Active Directory | L2/L3 Support
I assist companies in managing, optimizing, and maintaining their IT infrastructures. I work on Microsoft environments, corporate networks, and complex technical issues.
What I offer you:
- Windows Server, Active Directory & Azure AD Administration
- Microsoft 365 Management: Exchange, SharePoint, Teams, Intune
- VM Deployment and Configuration on VMware, Hyper-V, and Proxmox
- Deployment and Configuration of Routers, Switches & Pro Wi-Fi
- VPN, VLAN, Network Segmentation Setup
- NAS Installation and Management (Synology, QNAP)
- L2/L3 Technical Support and Advanced Troubleshooting
- Task Automation via PowerShell
Typical Missions:
- Creation, migration, or optimization of a Microsoft 365 environment
- Network Configuration: VLAN, Routing, Site-to-Site and Remote VPN
- Active Directory Deployment and Management (GPO, Security, MDM)
- Installation and Configuration of IT Equipment (PCs, Workstations, Servers)
- Backup & Restore Policy Implementation
- Professional Wi-Fi Infrastructure Deployment for SMEs
- Diagnosis and Resolution of Complex Incidents (Network, AD, Exchange, etc.)
🔒 Bonus: Operational cybersecurity skills (log analysis, EDR/XDR, hardening best practices).
🎯 Goal: To provide you with a stable, high-performing, and well-documented infrastructure.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km)
Experience
- Integral MicroSystem, Network, and Security AdministratorApril 2026 - Today (2 months)Asnières-sur-Seine, France
- Administration and operational maintenance of a multi-client environment (~300 clients including ~115 recurring)
- Deployment, administration, and supervision of EDR/XDR solutions: behavioral detection, IOC analysis, incident investigation, and remediation
- Analysis and correlation of system and security logs (authentication, AD events, endpoints) for anomaly detection and incident response
- Infrastructure supervision and security alert management (proactive monitoring, reduced detection and response time)
- Windows server supervision (critical services, performance, event logs) to ensure availability, integrity, and early incident detection
- Administration and security of Microsoft 365 environments (Exchange, SharePoint, Intune): MFA, conditional access management, configuration hardening
- Active Directory and Entra ID administration: identity management, GPO, access control (IAM), principle of least privilege application
- Configuration and security of network equipment (routers, firewalls, Wi-Fi, VPN): LAN/WAN segmentation, DNS/DHCP management, traffic security
- Implementation and supervision of backup strategies (DRP/BCP), ransomware protection, and restoration tests
- NAS configuration and deployment (RAID, NTFS rights management, share security)
- OVH telephony administration
- Level 1/2/3 technical support and incident management via GLPI
- Implementation of security policies and user awareness training on cyber best practices
- ACTIT SystemSystems, Networks, and Cybersecurity AdministratorDecember 2022 - September 2025 (2 years and 9 months)Lognes, France
- Administration and operational maintenance of a multi-client environment (~100 clients including ~30 recurring) comprising +1000 workstations, ~70 physical and virtualized servers, and +30 Microsoft 365 tenants, ensuring service availability, performance, and security
- Deployment, administration, and supervision of EDR/XDR solutions: behavioral detection, IOC analysis, incident investigation, and remediation
- Analysis and correlation of system and security logs (authentication, AD events, endpoints) for anomaly detection and incident response
- Infrastructure supervision and security alert management (proactive monitoring, reduced detection and response time)
- Windows server supervision (critical services, performance, event logs) to ensure availability, integrity, and early incident detection
- Administration and security of Microsoft 365 environments (Exchange, SharePoint, Intune): MFA, conditional access management, configuration hardening
- Active Directory and Entra ID administration: identity management, GPO, access control (IAM), principle of least privilege application
- Configuration and security of network equipment (routers, firewalls, Wi-Fi, VPN): LAN/WAN segmentation, DNS/DHCP management, traffic security
- Implementation and supervision of backup strategies (DRP/BCP), ransomware protection, and restoration tests
- NAS configuration and deployment (RAID, NTFS rights management, share security)
- 3CX VoIP telephony administration (SIP Trunk, SVI, CallFlow)
- Level 1/2/3 technical support and incident management via GLPI
- Implementation of security policies and user awareness training on cyber best practices
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Education
- Master in Cybersecurity and Artificial IntelligenceEFREI Paris2025Analyse de malwares Analyse post-mortem et Forensic Stage de Forensic en Lithuanie - VilniusTech Déploiement SIEM Réponse à incident - SOC Politique de cybersécurité ( ISO 27001, ISO 27005, RGPD) Audit et test d’intrusion Pilotage CSIRT
- Bachelor in Cybersecurity and Ethical HackingEFREI Paris2023Gestion Windows Server (AD, DNS, DHCP) Scripting PowerShell Préparation aux certifications CEH et CCNA Monitoring ZABBIX et NAGIOS
Certifications
- Blue Team Level 1Security Blue Team2025
- CISA: Certified Information Systems AuditorPACKT2025