Lisbon, Lisbon, Portugal
Summary
Monitored, maintained, and optimized enterprise network infrastructures for global clients including Audi Germany, Volkswagen Germany, and EUIPO to ensure high availability and robust security.
Highlights
Supervised 24/7 network availability across multi-site enterprise environments using Check_MK, SolarWinds, Cisco Prime, Spectrum, and PRTG, proactively identifying and resolving network anomalies to sustain 99.9% uptime SLAs.
Diagnosed complex LAN/WAN connectivity issues and conducted deep-packet root cause analysis using Wireshark, ping, and traceroute, reducing mean time to resolution (MTTR) by 25%.
Configured and maintained Cisco routers, switches, and firewalls utilizing OSPF, EIGRP, BGP, VLAN segmentation, and ACLs to ensure optimized data flow and high-throughput network redundancy.
Strengthened network edge and perimeter defense through robust security controls, including port security, IPsec/SSL VPNs, Cisco ASA/Fortinet policies, and centralized access controls via Active Directory, RADIUS, and TACACS+.
Executed critical infrastructure changes, firmware upgrades, and security patching while managing L1/L2 incident lifecycles across xurrent (4me), BMC Remedy, and SC3 with a 98% first-response SLA compliance rate.