Dhia Fredj

I’m an Infrastructure & Security Engineer with 4+ years of experience designing, deploying, and securing hybrid infrastructures and production systems. I focus on Security Operations (SOC), incident detection and response, SIEM administration, and vulnerability management across Linux/Windows and cloud/hybrid environments.

In my current role, I lead the infrastructure and security for hybrid production environments (Linux/Windows, Hyper-V, VMware, SAN, FortiGate NGFW), delivering 99.9% uptime for 25k+ users. I administer Active Directory, DNS, DHCP, SSL/TLS PKI, Nginx, Cloudflare, email systems, VPNs, and firewall policies across 15+ platforms.

I build resilient operations through disaster recovery and business continuity using Veeam and AWS S3, achieving 99.95% service availability. On the cybersecurity side, I integrate SIEM and automate incident response (Shuffle SOAR), reducing security incidents by 35% and speeding up resolution by 40%.

I also lead national platform initiatives—PlagPrevent, HygieSys, and ScientiWorld—improving detection accuracy, reducing operational waste, and implementing CI/CD DevSecOps pipelines that strengthen security posture. I combine hands-on SOC operations (Wazuh, TheHive, MISP, Cortex, Zabbix) with ISO 27001-aligned compliance and correlation tuning.