Dmytro Kravchenko

Cell : 206-***-****

E-mail: ac27kl@r.postjobfree.com

Skype: corefey_1703

NETWORK ENGINEER

SUMMARY

Network Engineer with 10+ years of professional experience. Qualified to design, install, and manage enterprise and Internet Service Provider networks. Skilled at configuring and troubleshooting an extensive range of equipment: routers and switches, firewalls, UNIX and Windows servers, WAN/LAN technologies, TCP/IP protocols, IP telephony. Have in-depth knowledge of Juniper, Cisco, and Extreme networks equipment. Worked both as a team member and independently. Demonstrated ability to adapt to new technologies and equipment. SKILLS

Network protocols:

TCP/IP, BGP, OSPF, IPSEC, SIP, VTP, STP, VLAN, NAT, VPN, DOCSIS, ETHERNET Platforms:

FreeBSD

Linux CentOS/Debian/Ubuntu

Windows XP/Vista/7/10/, Windows Server 2003/2008/2012 Software:

Bind, Inbound

JIRA, Bugzilla

ProFTPd, Tftpd-hpa

Apache, Nginx

Asterisk

ISC-DHCP, FreeRADIUS

VMware, Proxmox (OpenVZ, KVM, LXC)

Postfix, Exim, Courier IMAP, SpamAssassin

IPFW, Iptables, OpenVPN

PostgreSQL, MySQL

Zabbix, Cacti

Hardware:

Juniper Networks (MX80, MX104, MX480)

Extreme Networks (EAS 100-24t, Summit 300-24, 450, 460, BD 8806)

BigBand (Cuda 12000, 3000)

Cisco (Catalyst 2960)

Motorola (BSR 1000, 2000)

Extreme Networks (EAS 100-24t, Summit 300-24, 450, 460, BD 8806)

D-Link (DGS 3420, DES 3200)

Zyxel (XGS 4728, GS 4012, MES 3528)

Dell (R210, R610, R710)

HewlettPackard (BladeSystem C7000, DL120, DL 360) Programming:

Shell scripting (Bash)

EXPERIENCE

Discovery, Ukraine (06/2016 – 10/2017)

Network Engineer

Deployed BGP protocol for uplink connections to the top-level Internet Service Providers and Internet Exchange Points. Configured OSPF protocol inside an autonomous system.

Migrated current customer authorization scheme to Broadband Remote Access Server (BRAS) technology that reduced segmentation customer IPv4 network.

Deployed 3 virtual clusters with more than 100 virtual servers managed by Proxmox which allowed to build distributed and fault tolerance system with virtual machine live migration and traffic balancing. Migrated existing solutions from physical servers into the private cloud which reduced electricity consumption by 50%.

Implemented Virtual Private Networks VPNs using IPsec and OpenVPN.

Analyzed WAN/LAN to identify problem areas and improved a network infrastructure.

Deployed IP Private Branch Exchange system (IP PBX) based on Asterisk with E1 circuit for connection to the public switched telephone network (PSTN) and IP-GSM gateway. GlobalLogic, Ukraine (03/2015 – 05/2016)

Network Test Engineer, Quality Assurance

Tested network equipment for the largest telecommunications companies in Europe.

Created and executed test plans, cases and scripts to identify and document issues and their causes.

Wrote product quality and release readiness testing reports.

Managed functionality, graphic user interface and content defects using Bugzilla and Jira. Discovery, Ukraine (07/2005 – 03/2015)

Network/System administrator

Installed and configured Juniper Networks routers, Extreme Network routers and switches, Cisco switches, ZyXEL and D-Link switches and other network equipment.

Installed and configured over 100 servers running operating system FreeBSD, Linux, Windows 2008/2012 Server.

Configured several DNS servers based on Bind and Inbound.

Configured web servers running Apache and Nginx for the corporate website and additional projects.

Configured DHCP server running ISC DHCP for customer authorization.

Set up mail server based on Postfix, Courier IMAP, SpamAssassin, Amavis, PostgreSQL with spam and virus filtering.

Set up firewalls running IPFW and Iptables.

Configured monitoring and warning system using Zabbix and Cacti.

Deployed virtual infrastructure on Proxmox and VMware software.

Installed and configured equipment for DOCSIS network, cable modem termination system Motorola and BigBand Networks and customer cable modems.

Configured Terminal Servers on Windows 2008/2012 Server.

Provided IT support for employees and customers. EDUCATION

Inter-Regional Academy of Personnel Management, Ivano-Frankivsk, Ukraine, 2004-2008

Masters of Science (M.S.), Computer Science.

College of Electronic Devices, Ivano-Frankivsk, Ukraine, 2001-2004

Bachelor of Science (B.S), Engineering.

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