Sr. Network Engineer

As a member of IP network Team (3rd and 4th level) involved in installation, design, support, migration of big international network (2500+ routers/switches/firewalls, EMEA) with usage of a lot of technologies for LAN/WAN connectivity, redesigning backbone of network, migrating client to IPSec/VPN technologies using big spectrum of equipment (Cisco routers, switches, firewalls) and technologies. 
Supporting, maintaining and redesigning VPN/IPSec network (200+ devices like Cisco routers, switches, Nokia CheckPoint Firewalls, WolfPac devices).
Was involved in design and deployment of VoIP network for internal usage.
Involved in planning, designing and implementing DR for different clients.
Maintaining and developing security policy for different networks. 
Supporting and maintaining RSRB (DLSW+) connectivity.
Out of office hours and on-call support for 3rd level issue.

The main responsibilities were:
Designing, maintaining and troubleshooting network and Internet access security schema for all bank departments.
Designing, maintaining and troubleshooting Windows NT network security (user policy, security policy, antivirus software, domain model and trust relationship) and security policy for AS/400 (system and application).
Designing, maintaining and troubleshooting Internet security (firewall, NAT, proxy).
Working out necessary security instructions

Promoted twice.  
Chief Engineer
March 1997 - February 2000
 Was involved in modifying and maintaining electronic payment networks for Donetsk Regional Branch of Savings Bank of Ukraine. Installed, configured and maintained Cisco equipment (switches, access servers, routers), necessary protocols and services (frame relay, vlan, ppp, hdlc, snmp, rip, igrp, dns, dhcp) for banking networks and their interconnecting. Was involved in the maintaining Novell NetWare, Windows NT (with RAS for banking mail system) servers. Handled regular system administration of UNIX (FreeBSD and Linux) systems used for Internet access, samba, packet filtering, firewall, news, smtp, pop3. Participated in development, design and implementation of network security in Donetsk Regional Branch of Savings Bank of Ukraine.
Senior Engineer
January 1996 - March 1997
 Was involved in design, installation, modification and maintenance of electronic payment networks, network infrastructure and interconnections for Donetsk Regional Branch of Savings Bank of Ukraine. Installed, configured and maintained Cisco equipment (switches, access server) and necessary protocols and services (ppp, hdlc, dhcp, snmp, dns). Those networks were based on Novell NetWare and Windows NT. Was in charge of regular system administration of UNIX (RedHat Linux) used for Internet access.
Engineer
June 1995 - January 1996
 Installed and maintained Novell NetWare based networks in Donetsk Regional Branch of Savings Bank of Ukraine and its subdivisions.