Network Security Infrastructure Lead

About Sopra Steria Sopra Steria, a major Tech player in Europe with 51,000 employees in nearly 30 countries, is recognised for its consulting, digital services and solutions.

It helps its clients drive their digital transformation and obtain tangible and sustainable benefits.

The Group provides end-to-end solutions to make large companies and organisations more competitive by combining in-depth knowledge of a wide range of business sectors and innovative technologies with a collaborative approach.

Sopra Steria places people at the heart of everything it does and is committed to putting digital to work for its clients in order to build a positive future for all.

In 2025, the Group generated revenues of €5.6 billion.

The world is how we shape it.

• Manage, monitor, and troubleshoot enterprise Routing & Switching and Wireless infrastructure.
• Manage and troubleshoot Aruba ClearPass / CPPM (NAC), including 802.1X, RADIUS, authentication, and network access policies.
• Configure and support Aruba/HP switches, Wireless Controllers, and Access Points across enterprise environments.
• Troubleshoot Layer 2/Layer 3 connectivity, VLAN, STP, LACP, OSPF, BGP, DHCP, DNS, and network performance issues.
• Support network upgrades, migrations, configuration changes, and infrastructure optimization.
• Perform root-cause analysis for complex and recurring network incidents.
• Coordinate with internal teams, OEMs, and ISPs for network-related issues and activities.
• Maintain network documentation and operational procedures.

• Experience with Enterprise Firewalls such as Fortinet, Palo Alto, Check Point, or Cisco.
• Knowledge of NAT, VPN/IPsec, HA, and firewall security policies.
• Relevant certifications such as CCNA/CCNP, Aruba, or ClearPass.