CareerPlan

Senior L3 Network Engineer

BarcelonaFull-time2026-11-04 → 2026-11-10

Core

Provide advanced Level 3 support, troubleshooting, fault isolation, and optimization for enterprise network infrastructure.

Role type

Senior L3 Network Engineer

Builds

Enterprise network infrastructure, security implementations, and automation tools

Domain

Enterprise networking and security

Required skills

Routing and switching protocols (TCP/IP, BGP, OSPF, EIGRP, MPLS), Enterprise networking hardware (Cisco, Palo Alto, Aruba, Juniper), VPN technologies, Firewall configurations, Network monitoring tools (SolarWinds, PRTG, Nagios, Cisco Catalyst Center/DNAC, Cisco ISE), Root-cause analysis, Network architecture design

Preferred skills

CCNP/CCIE or equivalent certifications, SDN/NFV, Automation scripting (Python, Ansible), Cloud networking (AWS, Azure, GCP), Data center virtualization (VMware, Hyper-V), VoIP/Unified Communications systems

Technologies

Cisco, Palo Alto, Aruba, Juniper, SolarWinds, PRTG, Nagios, Cisco Catalyst Center, Cisco ISE, Python, Ansible, AWS, Azure, GCP, VMware, Hyper-V

Responsibilities

Lead network incident resolution and perform detailed root-cause analysis for major outages, Maintain and support network architecture design reviews, upgrades, and security implementations, Automate routine network tasks and enhance monitoring processes using scripting, Develop and maintain accurate network configurations and technical architecture documentation, Participate in an on-call rotation (up to 1 week per month)

Seniority

Senior, hands-on IC