Network Security Engineer (Luxembourg)

The Network Security Engineer is responsible for operating, maintaining, securing, and evolving the client Network Secure Access (NSA) infrastructure. This includes firewalling, VPNs, identity services, proxies, DNS, anti-DDoS, and secure connectivity across all client sites. The engineer ensures confidentiality, integrity, and availability of the network by implementing robust security controls, monitoring threats, and supporting critical operational services.

Network Security Services Operations :

• Operate multi-vendor firewall infrastructures (CheckPoint clusters, Fortinet clusters, standalone FortiGate appliances).
• Manage advanced firewall features : stateful inspection, application control, IPS / IDS, threat prevention, SD‑WAN, anti‑spoofing, DNS security.
• Maintain secure network segmentation across Internet, LAN, DMZ, Cybernet, datacenters, TESTA, and EP Cloud environments.

Security Policy Management (AlgoSec) :

Identity & Secure Access Services :

Network External Access Services :

Operational Responsibilities :

Experience :

Key Competencies :

Our Offer :

An attractive salary package with or without a company car

5 additional vacation days each year

A dedicated training program with personal development plans

Extra-legal advantages (IT material, banks, ...)

Regular events with the CTG team : learning lunchs, team buildings, fun events, Xmas, Marathons, ...

If you like multicultural teams and want to join a company with open communication, then apply right now !

Please note that a criminal record will be asked for this position.