Network Security Engineer

il y a 2 jours


Nantes, Loire-Atlantique, France Glocomms Temps plein

Job Title: Network Security Engineer

Start date: Immediate start

Location: Nantes

Industry: Global Systems Integrator

Clearance: Must be French-certified (habilitation)


About the Company:

Our client is a prominent telecommunications company in France, offering mobile and fixed-line telephony, internet, and digital television services. They serve both consumers and businesses with innovative solutions, ensuring high-quality connectivity and the latest technological advancements. Dedicated to customer satisfaction, the company invests in excellent customer service and support. They also prioritize sustainability and corporate social responsibility, actively reducing their environmental impact.


Role Overview:

Our client are seeking a skilled Network Engineer to support a critical project for a leading manufacturing company in France. This role involves executing a comprehensive network rebuild, focusing on VLAN segmentation, Cisco switch configuration, and DMZ implementation. The ideal candidate will have hands-on experience in network segmentation, switch hardening, and the rerouting of applications, ensuring a secure and functional network infrastructure following a recent cyber incident.


Responsibilities:

  • Configuration & hardening of Cisco switches and collection of evidence to ensure network integrity and security.
  • Execution of a logical segmentation of the current network, including VLAN assignment and segmentation, based on a target network schema.
  • IP rerouting of approximately 80 applications to align with the restructured network design.
  • Set up technical services within the network infrastructure and ensure their smooth integration.
  • Mapping of inter-VLAN flows and the implementation of filtering rules to optimize network traffic and enhance security.
  • Configuration of services within the DMZ, ensuring proper isolation and secure communication.
  • Documentary production including the creation of DOE (Documents d'Exploitation), DIT (Documents d'Installation Technique), and DEX (Documents d'Exploitation Technique) to record and formalize all changes and configurations.


Secondary Responsibilities:

  • Configuration & hardening of firewalls (Stormshield & Fortinet) and filtering/routing rules.
  • Implementation of internal and external firewall rules and collection of evidence.
  • Continued support in hardening network services and ensuring compliance with security standards.
  • Ongoing updates of the CMDB (Configuration Management Database).


Desired Technical Knowledge:

  • Experience with Cisco switch configuration/ VLAN segmentation.
  • Expertise/ knowledge in network segmentation and implementing inter-VLAN routing.
  • Firewall configuration and hardening (Fortinet, Stormshield).
  • Ability to produce clear and detailed technical documentation (DOE, DIT, DEX).
  • Fluent in French; English proficiency is a plus but not required.

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