Senior Network Engineer: SASE & Data Center Networking

SBS; Courbevoie; On-site; EUR 90,000 - 130,000; Full time

Job summary

SBS is seeking a Senior Network Engineer to join its IT Infrastructure team in Courbevoie, France. You will design, implement, and maintain complex network environments, including SASE, BGP, SD-WAN, and data center leaf-spine fabrics, with a strong IT security focus and English-language collaboration across Europe, the US, and India.

You will lead firewall management, CSP integrations, reverse proxy operations, and network automation while ensuring compliance and high availability.

Qualifications

• Bachelor’s degree in CS/IT or related field; certifications are a plus.
• 5–8 years of network engineering experience with SASE, BGP, SD-WAN, and CSP operations.
• Hands-on experience with data center fabric design (leaf-spine/Clos) and EVPN-VXLAN.
• Professional English proficiency required; written and spoken.

Responsibilities

• Design, deploy, and maintain high-performance network infrastructures meeting business needs.
• Implement SASE solutions to enhance security and secure access across environments.
• Configure and manage BGP routing for optimal performance.
• Design, deploy, and operate Layer 3 leaf-spine data center fabrics (Clos architectures).
• Develop underlay routing and overlay VXLAN/EVPN for scalable fabrics.
• Support data center migrations, hardware refresh, and fabric expansion with minimal disruption.
• Configure, manage, and monitor firewalls, VPNs, and threat prevention.
• Design and manage SD-WAN across multiple locations.
• Integrate and manage network services in CSP environments (AWS/Azure/GCP).
• Configure and manage reverse proxy technologies (NGINX/HAProxy).
• Apply IT security best practices: Zero Trust, vulnerability management, IDS/IPS.
• Troubleshoot network issues and collaborate with IT teams on incidents.
• Document configurations and changes; generate periodic performance/security reports.
• Stay updated on industry trends and propose upgrades.

Skills

SASE

BGP

Firewall management

SD-WAN

CSP operations

Reverse proxy

Data center fabric

WiFi technology

IT security

English language proficiency

Education

Bachelor’s degree in CS/IT or related field

CCNA/CCNP/CISSP certifications

Tools

NGINX

HAProxy

VXLAN/EVPN

Palo Alto firewall

Fortinet firewall

Aruba fabric switching

Cisco Meraki

Job description

SBS is seeking a Senior Network Engineer to join its IT Infrastructure team in Courbevoie, France. You will design, implement, and maintain complex network environments, including SASE, BGP, SD-WAN, and data center leaf-spine fabrics, with a strong IT security focus and English-language collaboration across Europe, the US, and India.

You will lead firewall management, CSP integrations, reverse proxy operations, and network automation while ensuring compliance and high availability.