Contract

Comgent; Châtillon; Sur place; EUR 90 000 - 130 000; Plein temps

Résumé du poste

Comgent is seeking an experienced Network & Security Architect to design, evolve, and govern network architectures across a large hybrid environment (datacenters, 3,500+ remote sites, cloud). The role ensures security, performance, and modernization of the network and security foundation.

You will lead architecture design, set standards, and collaborate with technical teams and vendors to drive migration strategies, risk management, and documentation across global networks.

Qualifications

• Proven experience as Network & Security Architect in large multi-site enterprise environments.
• Strong expertise in routing, switching, firewalling, VPN, SD-WAN, VLANs, load balancing, and hybrid/cloud connectivity.
• Solid network cybersecurity background (segmentation, DMZ design, secure access, resilience).
• Excellent architecture documentation and communication skills.

Responsabilités

• Design and document end-to-end network/telecom architectures: LAN/WAN, VPN, SD-WAN, cloud networking, DMZ, IP telephony.
• Ensure alignment with internal standards and security, availability, and resilience requirements.
• Provide expert guidance to technical and project teams on technology choices, risks, and migration strategies.
• Drive standardization, automation, and industrialization of network solutions.
• Participate in Architecture Boards / Design Authority and maintain the technical reference repository.
• Technical recommendations and decision notes.
• Design Authority presentations.
• Risk and progress reporting.

Connaissances

Network architecture

Security architecture

Routing

Switching

Firewalling

VPN

SD-WAN

VLANs

Load balancing

Hybrid connectivity

Cloud connectivity

Description du poste

Châtillon, France | Posted on 04/12/2025

Start Date: Immediately Location: Ile de France (92); hybrid (on-site presence required)Languages: Fluent French and professional English mandatory

Job Description

Looking for a Network & Security Architect to design, evolve, and govern network architectures across a large hybrid environment (datacenters, 3,500+ remote sites, cloud, telecom operators). The role is central to ensuring consistency, security, performance, and modernization of the network and security foundation.

Key Responsibilities:

• Design and document end-to-end network/telecom architectures: LAN/WAN, VPN, SD-WAN, cloud networking, DMZ, IP telephony.
• Ensure alignment with internal standards and security, availability, and resilience requirements.
• Provide expert guidance to technical and project teams on technology choices, risks, and migration strategies.
• Drive standardization, automation, and industrialization of network solutions.
• Participate in Architecture Boards / Design Authority and maintain the technical reference repository.
• Technical recommendations and decision notes.
• Design Authority presentations.
• Risk and progress reporting.

Short-Term Priorities:

• Produce a Secure SD-WAN RFP for ~3,500 sites.
• Finalize the DMZ / exposure network architecture after deployment of a new intranet fabric.

Requirements

Must-Have Skills & Experience:

• Proven experience as Network & Security Architect in large multi-site enterprise environments.
• Strong expertise in routing, switching, firewalling, VPN, SD-WAN, VLANs, load balancing, and hybrid/cloud connectivity.
• Solid network cybersecurity background (segmentation, DMZ design, secure access, resilience).
• Excellent architecture documentation and communication skills.

Nice-to-Have / Tools:

Soft Skills:

• Technical leadership, autonomy, rigor.
• Strong stakeholder management and cross-team communication.
• Ability to run workshops with vendors and internal engineering teams.