Firewall Engineer

Next Ventures; Guyancourt; Sur place; EUR 60 000 - 80 000; Plein temps

Résumé du poste

A leading technology organization is seeking an experienced Network/Security Architect in Guyancourt, Île-de-France to enhance network security and modernize data center infrastructure. The role involves defining firewall solutions, translating security strategy, and collaborating with cross-functional teams. Candidates should have a strong background in network security architecture and excellent stakeholder management skills. This long-term position offers a hybrid work pattern: 3 days onsite and 2 days remote.

Qualifications

• Strong background as a Network / Security Architect in complex enterprise environments.
• Deep knowledge of security architecture principles and best practices.
• Proven ability to lead, mentor, and influence technical teams.

Responsabilités

• Define and design firewalling and micro‑segmentation solutions aligned to business and security requirements.
• Translate high‑level security strategy into scalable technical architecture.
• Optimise firewall configurations, performance, and overall security posture.

Connaissances

Network security architecture

Stakeholder management

Communication skills

Outils

F5

Cisco ACI

VMware NSX

MPLS

Description du poste

We are supporting a major organisation on a strategic programme focused on strengthening network security and modernising data centre infrastructure. This is a key architect-level role within a highly complex enterprise environment.

You will be working across a broad and modern technology stack including F5, VXLAN EVPN, Cisco ACI, VMware NSX, Segment Routing, and MPLS, with a strong focus on firewalling and micro‑segmentation strategy.

Key Responsibilities

• Define and design firewalling and micro‑segmentation solutions aligned to business and security requirements
• Translate high‑level security strategy into scalable technical architecture
• Optimise firewall configurations, performance, and overall security posture
• Collaborate closely with network and cyber defence teams to ensure end‑to‑end security
• Partner with Product Owners and Product Managers on strategic decisions
• Support vendor engagement and continuous technology improvement
• Guide and support implementation teams within the Firewall squad
• Produce architecture documentation, diagrams, and technical presentations
• Contribute to operational stability, security, and ongoing support

Required Experience

• Strong background as a Network / Security Architect in complex enterprise environments
• Deep knowledge of security architecture principles and best practices
• Proven ability to lead, mentor, and influence technical teams
• Strong stakeholder management and communication skills

Technical Skills

• Network: LAN, WAN, MPLS, VPN, switching, routing, load balancing, proxies
• Scripting and automation
• Certificate management
• Work pattern: 3 days onsite / 2 days remote
• Start: ASAP
• Contract: Long-term with extension potential