Network & Security Architect - freelance - hybrid - Ile de France

Comgent; Châtillon; Sur place; EUR 65 000 - 85 000; Plein temps

Résumé du poste

A technology solutions provider is seeking a Network & Security Architect to design and manage network architectures across a large hybrid environment that includes datacenters and over 3,500 remote sites. The ideal candidate will have proven experience in large multi-site environments, strong expertise in routing and security technologies. Responsibilities include creating end-to-end designs and driving standardization across network solutions. The position demands excellent technical leadership, stakeholder management, and effective communication skills.

Qualifications

• Proven experience as a Network & Security Architect in large multi-site enterprise environments.
• Strong expertise in networking technologies and security measures.
• Solid network cybersecurity background for ensuring security compliance.

Responsabilités

• Design and document network and telecom architectures.
• Ensure alignment with internal standards and security requirements.
• Provide expert guidance on technology choices and risks.
• Drive standardization and automation of network solutions.

Connaissances

Routing

Switching

Firewalling

VPN

SD-WAN

Load balancing

Hybrid/cloud connectivity

Technical leadership

Stakeholder management

Cross-team communication

Outils

TOGAF

ArchiMate

SAFe

LeanIX

Jira

Confluence

Draw.io

Visio

Description du poste

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.

Main Deliverables :

• Architecture documents (DAT / HLD / LLD).
• 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.

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).

Vendor knowledge :

Cisco, Arista, Fortinet, Palo Alto, F5 (or equivalent).

Nice-to-Have / Tools :

• TOGAF, ArchiMate, SAFe, LeanIX.
• Jira / Confluence, Draw.io (or Visio).

Soft Skills :

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

Requirements

Network Architect, Security Architect, SD-WAN, Secure SD-WAN, DMZ, Cloud Networking, Hybrid Infrastructure, LAN, WAN, VPN, Firewall, Cisco, Arista, Fortinet, Palo Alto, F5, Retail, Multi-site, Datacenter, Design Authority, HLD, LLD, DAT, SASE, ZTNA, Segmentation.