Technicien / Ingénieur Sécurité & Réseaux (IT/OT)

About The Role As part of its growth, CYRAF is recruiting profiles ranging from experienced Network Technician to Security & Networks Engineer, to work on IT/OT cybersecurity and critical infrastructure projects. Key Responsibilities • Operate, administer and secure network and system infrastructures. • Participate in the design and evolution of secure IT/OT architectures. • Deploy and maintain network security solutions (firewall, VPN, segmentation, IDS/IPS). • Administer virtualized environments (VMware, QEMU, Azure). • Automate provisioning and service management (Active Directory, DNS, DHCP, GPO, antivirus, security event management). • Contribute to migration, modernization and automation projects. • Provide technical support, documentation and customer support. Required Qualifications • Bac+2 to Bac+5 degree in networks, systems or cybersecurity. • Strong network fundamentals: TCP/IP, DNS, DHCP, VLAN, VPN, SSL/TLS, IPSec. • Good understanding of LAN/WAN architectures, firewalls and high availability. • Knowledge of system and network security. • Strong interest in industrial cybersecurity and critical environments. • Rigor, autonomy, teamwork spirit and technical curiosity. Preferred Qualifications • Experience with Windows Server / Active Directory environments. • Network or security certifications (CCNA, CompTIA Network+, Security+). • Knowledge of OT environments and industrial protocols (Modbus, Profinet, OPC). What We Offer • High-impact projects on sensitive infrastructures. • Skills development path from technician to engineer. • Demanding and structured technical environment. • End-to-end vision: network, security, risk and industrialization.