Network Engineer

Telefónica Tech

L2 Network Engineer managing network infrastructure and security systems at Telefónica Tech, providing support and troubleshooting to ensure optimal network performance and security.

Posted 4/22/2026full-timeRemote • 🇬🇧 United KingdomJuniorWebsite

Tech Stack

Tools & technologies

Switching

About the role

Key responsibilities & impact

The L2 Network Engineer will cover management, maintenance and support of network infrastructure, perimeter security systems and network management platforms.

Requirements

What you’ll need

Experience of enterprise LAN/WAN/WLAN management
Experience of Cisco, HPE, Aruba, Meraki and/or Juniper switching/wireless
Experience of firewall technologies, particularly Fortinet, Cisco, Meraki and/or Palo Alto
Experience of network monitoring, troubleshooting and management tools
CCNA certification

Benefits

Comp & perks

Remote and onsite support (where required) of network and security infrastructure (LAN / WAN / WLAN / Firewalls / Application/VPN, Delivery Controllers etc.)
Troubleshooting complex network issues, identifying network bottlenecks, and implementing solutions to ensure optimal network performance
Optimizing network infrastructure to ensure maximum performance and scalability.
Maintain accurate network documentation, including network diagrams, configurations, and inventory records
Prepare regular reports on network performance, availability, and security
Day-to-day patching, maintenance and operation of the above in secure environments
Continual improvement of the systems based on changing demands
Liaising with various departments within the business
Coordinating with 3rd party suppliers and partners to support, maintain and implement these systems

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

LAN managementWAN managementWLAN managementCisco switchingHPE switchingAruba switchingMeraki switchingJuniper switchingfirewall technologiesnetwork monitoring tools

Certifications

CCNA