Efim Losev

acohc8@r.postjobfree.com 323-***-**** ( Los Angeles, CA

Permanent Work Authorization ( No Visa Sponsorship Required ( Open to

Relocation

PROFESSIONAL SUMMARY

Systems Engineer with 10+ years of experience in Linux, and VoIP seeking

opportunity as a System Engineer

KEY SKILLS

Linux: Debian, Gentoo, Redhat

Unix: FreeBSD, Mac OSX

Windows servers: 2003/2008

Hardware: Cisco, Juniper, IBM, HP, Supermicro

Networking: IPv4, IPv6, TCP/IP, UDP, SNMP, DHCP, NTP, DNS

Shell Scripting: Bash

Unix Services: IPtables, Squid, Rsync, Apache, Nginx, MySQL, PHP, BIND,

Vsftpd, Proftpd, OpenSSH, PF, Pptpd, OpenVPN, SVN, GIT, Haproxy, Ansible

Telephone systems: Asterisk, Opensips

Virtualization: VMware ESXI, Proxmox VE

PROFESSIONAL EXPERIENCE

Operation Engineer, GOIDD Inc. Orange County, CA

07/2014 - Present

. Designed and implemented HA scalable VoIP services for VoIP startup from

scratch, allowed company to provide services to up to 100,000 customers

and increased stability and reliability of service

. Installed, configured, monitored and updated 30+ servers on two

different sites

. Support team of five developers with daily requests, using tracker

systems

. Automated server installation process using Kickstart and Ansible to

speed up server deployment by 2000%

. Built, configured and deployed virtual machines and templates based on

KVM and Google compute Cloud which simplified server deployment, saving

time, effort, and reducing costs

Systems Engineer, State University of Telecommunications, St. Petersburg,

Russia 09/2011 - 04/2014

Leader in telecommunication education in Russia with 2000+ employees and

9000+ students; also major data provider

. Implemented HA for website by using Nginx as load balancer, memcached

and keepalived, reduced downtime by 6X

. Restored network after major provider-related accident by switching pool

of IP addresses to an unaffected pool; system was fully functional

within 3 days

. Reconfigured web servers by implementing changes in configuration files

using Nginx, Apache, and MySQL; reduced expenses on purchasing new

hardware by 20% in one year

. Connected University to internet using IPv6 in 3 days by configuring BGP

session, VLAN, and adding AAAA records in team of 2; allowed University

to be up-to-date with modern technologies

. Supported, servers that hosted 200+ sites, with up to 200,000+ visits

per day; support included configuring virtual hosts apache and Nginx,

editing DNS zones, creating and managing MySQL databases, web servers,

mail servers, and troubleshooting DNS servers

. Implemented VPN that provided a secure connection between 5 buildings

. Responded to IT requests over emails and phone calls for developers and

clients, this earned $1M annually in providing additional services such

as colocation, hosting, website development and internet services

. Implemented and configured IPTV for teaching, allowing it to support

1000+ connections at a time

. Upgraded networks from L3 to L2 to support more connections using the

same hardware

. Completed channel data aggregation and data load balancing using CISCO

routers and Juniper switches

Systems Engineer, First News LLC. St. Petersburg, Russia

08/2010 - 04/2011

Online news portal with 40+ employees

. Built all infrastructure including servers, networks and workspaces and

managed PBX and LAN

. Designed, developed and implemented LAMP-based web servers (LAMP, DNS,

backup system)

Systems Engineer, National Library of Russia, St. Petersburg, Russia

09/2003 - 09/2010

Seventh largest library in the world, with over 1 million visitors per year

and 2000+ employees

. Maintained, updated, implemented and redesigned 80 servers including:

proxies, databases, mail systems, DNS, web-services, VPN, allowing

library to provide customers with various types of services

. Modernized and migrated SAN increasing capacity from 4.5M files to 18M

files

. Designed and implemented firewalls, email systems, VPNs, DNS, Web

servers and proxies

. Updated library's file directory which allowed to increase amount of

records kept in database to 100+ million

EDUCATION

B.A. in Economics, University of Economics, Saint-Petersburg, Russia

1999

Public University est. 1930 with 13,000 students

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