Description

I’m Helmi Riahi, a Network and Security Engineer with a strong background in networking, systems, and cybersecurity. I enjoy designing secure architectures, managing firewalls and VPNs, and monitoring infrastructures both on-premise and in the cloud with Azure. I’ve also worked with SIEM, threat hunting, and penetration testing, which allows me to combine both defensive and offensive skills. Passionate about technology, I’m always learning and looking for new challenges in cybersecurity.

Languages

Arabic
Native or bilingual
French
Conversational
English
Conversational

Workplace preferences

Can work on-site

Tunis (up to 50km)

UHD
Network and Security Engineer
July 2025 - Today (11 months)
Tunis, Tunisia
• Designed and managed network segmentation via VLAN and routing protocols (OSPF).
• Ensured network monitoring and supervision with Cisco, SolarWinds, Zabbix, and Azure Monitor.
• Managed and applied firewall rules on Cisco ASA and Azure Firewall.
• Configured and administered VPN connections on Azure (Site-to-Site, Point-to-Site).
• Implemented Network Access Control (NAC) solutions.
• Configured authentication and authorization with RADIUS and TACACS+ using Cisco ISE.
OSPF Azure WAF Cisco IOS Firewall Cisco ASA
ASM
System Administrator
October 2024 - June 2025 (8 months)
Tunis, Tunisia
• Created and managed user accounts (Active Directory).
• Defined access rights to files, folders, and applications.
• Diagnosed and resolved system failures.
Administration système Sécurité réseau
Talan
Final Year Internship
February 2024 - May 2024 (3 months)
Tunis, Tunisia
• Implemented a next-generation SIEM solution covering the entire attack surface.
• Integrated an NIDS layer using Suricata and Zeek.
• Used Elastic Agent for HIDS monitoring.
• Enhanced threat intelligence with Zeek, MISP, and AlienVault OTX.
Threat Intelligence VMware vSphere System Integration