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Ingénieur Senior Opérations Sécurité Réseau

25/09/2025
Fixed termLuxembourgOn site
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Job description

Missions principales :

  • Gestion de l’infrastructure réseau hybride On-Premise / Cloud (Azure, SD-WAN) assurant disponibilité et sécurité des données.
  • Installation, configuration et maintenance d’équipements Cisco/Nexus en environnement Campus et Datacenter.
  • Supervision continue des performances réseau et résolution d’incidents de niveau 3.
  • Participation à la sécurisation des accès (NAC, dot1x, MAB), gestion des contrôleurs Wifi et du système ISE.
  • Contribution à l’automatisation des tâches (via Ansible, scripting) et à l’amélioration continue des processus réseau.
  • Maintien rigoureux de la documentation technique, suivi des évolutions et mise en conformité avec les politiques de sécurité du groupe.

Technologies et périmètre :

  • Maîtrise avancée de Cisco IOS/NxOS et protocoles réseau (BGP, OSPF, vPC, Spanning Tree...)
  • Expertise Cloud (Azure, AVS) et outils de supervision (PRTG, Splunk).
  • Interactions fréquentes en anglais et français.
  • Connaissance d’ITIL, forte sensibilité cybersécurité et automatisation appréciées.
Profile description

Nous recherchons des candidats qui incarnent l’excellence technique, mais aussi l’engagement, la curiosité et l’esprit d’équipe indispensables à un environnement exigeant et en évolution continue.

  • Expertise technique affirmée : Vous disposez d’une solide expérience en ingénierie réseaux, avec une maîtrise des environnements Cisco, des protocoles avancés (BGP, OSPF, vPC, Spanning Tree), et de l’infrastructure Cloud, notamment Azure.
  • Pragmatisme et rigueur : Vous êtes reconnu pour votre méthodologie de travail, votre sens du détail et le respect des standards de sécurité ; la conformité et la documentation rigoureuse vous tiennent à cœur.
  • Réactivité et sens de l’analyse : Vous excellez dans la résolution d’incidents complexes et apportez une vision lucide pour anticiper et prévenir les risques, en faisant preuve de sang-froid lors de situations critiques.
  • Aptitude à l’innovation : Vous recherchez en permanence à automatiser, optimiser et simplifier les processus, avec un attrait réel pour les outils modernes (Ansible, scripting) et une appétence pour la cybersécurité.
  • Communication et esprit d’équipe : Capable d’interagir en français et en anglais, vous collaborez efficacement avec des interlocuteurs variés, partageant vos connaissances et contribuant à la réussite collective.
  • Dynamisme et curiosité : Certification CCNA ou CCNP bienvenue, votre motivation vous pousse à élargir vos compétences, que ce soit dans les méthodologies ITIL ou les nouvelles tendances en cybersécurité et réseau.

Votre passion pour l’excellence, votre esprit d’initiative et votre volonté constante de vous perfectionner vous permettront de vous épanouir dans ce rôle à fort impact.

Job location:
Avenue du Swing 7 L-4367 Belvaux, Luxembourg
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