I work 19 years in the National Operator Moldtelecom.
Develop and maintain corporate and ISP networks based on the equipment of
Cisco with Cisco IOS ( all series switches and roters ) , Cisco IOS XR ( roters series ASR 9000, CRS3 )
Huawei switches L2 series, 23xx, 33xx, L3 93xx, 63xx , Routers series NE40, NE80
Mikrotik all series of routerboards on the RouterOS ( RB, CRS, CCR ) , Virtual RouterOS, CHR
Teltonika Routers RUT series, Switches TRB
Certificates: (CCNA, CCNP), MikroTik(MTCNA, MTCRE, MTCWE, MTCTCE, MTCINE)
Develop and configure IPv4, IPv6 networks using l2 protocols STP, RSTP, MSTP , LACP, QnQ, L2PT ( Huawei), RRPP(Huawei) , L3 protocols EIGRP ( Cisco), RIP, OSPF, BGP , VRRP and L2-3 MPLS
Options: DHCP, NAT, DNS, IP filter ACL, , I GMP, DHCP-Snooping,
VPN L2TP, PPTP, SSTP, IP-IP, EoIP( Mikrotik), OVPN, IPsec
Management protocols SNMP, Telnet, SSH , RouterOS(Mikrotik),
NMS servers: Dude, Cacti, Zabbix
Virtual platform install and configure : VMware ESXI 5, 5.5 , 6, 6.5, 6.7
OS install and configure : MS Windows Server 2k, 2k+ , FreeBSD, CentOS, Ubuntu.
Converged services install and configure
VoIP based on protocol SIP: FreePBX , VoIP-gateway,
IPTV live streaming servers : Wowza , Flussonic
Video survey with any IP cameras and NVR.
IoT devices based on protocol Z-Wave: Fibaro, Vera