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# Ingénieur Réseaux & Sécurité H/F

- **Company:** TEKsystems
- **Location:** Lille, France
- **Contract:** Permanent contract
- **Skills:** Border Gateway Protocol, CentOS, Dynamic Host Configuration Protocol, Debian Linux, Linux, Domain Name System (DNS), Ethernet, Trunking, Hypervisor, Multi-protocol Systems, Windows Servers, Network Architecture, Routing, Network Administration, Open Shortest Path First (OSPF), Red Hat Enterprise Linux, Virtual Local Area Networks, Virtualization Technology, Wide Area Networks, Network Switches, Load Balancing, In-Plane Switching (IPS), Firewalls (Computer Science), Ddos, Cisco, Citrix Netscaler, Vmware
- **Published:** July 26, 2026
- **Apply:** https://www.hellowork.com/fr-fr/emplois/81690490.html

## About the Role

LAN / WAN (Cisco, HP...)

 - L2 : Ethernet, VLAN, trunking, STP
 - L3 : OSPF, BGP, MPLS, ISIS
 - DNS, DHCP, IPAM, NTP
 - Load balancing / GSLB : F5, Netscaler
 - Sécurité : Firewalls, IPS, DDoS
 - Virtualisation réseau : VMware NSX, VXLAN

Systèmes

 - Linux : RedHat, CentOS, Debian
 - Windows Server, IP
Netscaler
Ethernet
MPLS
OSPF
VMWare
VLAN
ISIS
Pare-feu
Hyperviseurs
DHCP

## Description

Le consultant interviendra au sein d'une équipe réseau/sécurité expérimentée, en charge du maintien et de l'évolution d'infrastructures critiques.

· Garantir la disponibilité, la sécurité et la performancedes infrastructures réseau

· Maintenir les plateformes en conditions opérationnelles

· Contribuer à la gestion de l'obsolescenceet aux évolutions techniques

· Proposer des améliorations d'architecture et des optimisations

Responsabilités principales

Réseau & Sécurité

 - Administration réseau niveau 2 / niveau 3

 - Switching, routing, interconnexions
 - Gestion opérationnelle :

 - DNS, IP, ouvertures firewall
 - Administration :

 - Firewalls réseau & applicatifs
 - IPS
 - Protections antiDDoS
 - Interconnexion des datacenters et des clients
 - Participation aux choix et évolutions d'architectures réseau

RUN/ MCO / Évolution

 - Maintien en conditions opérationnelles (MCO)
 - Maintenance corrective et préventive
 - Capacity planning
 - Gestion de l'obsolescence
 - Contribution à l'automatisation et à l'industrialisation (outillage, process)
 - Collaboration avec les équipes sécurité, infra et européennes


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