At Stelmat Teleinformatica, I coordinated technical network operations, monitored service-level agreements, and provided N1, N2, and N3 support. I configured and administered GPON and wireless networks, along with network equipment from Mikrotik, Cambium, Ubiquiti, Extreme, and Enterasys.
I also administered Fortinet firewalls, Linux and Windows Server systems, and VMware installations. I used Zabbix and Grafana for network monitoring, coordinated infrastructure expansion and upgrades, and trained technical teams.
