Denis (talmuth) Lozko

Summary:

Working on interesting internet projects using high-end technologies for decent payment.

Personal qualities:

responsible, purposeful, erudite

Skills:

• Brainbench: http://www.brainbench.com/xml/bb/transcript/public/viewtranscript.xml?pid=6125262
• Operation Systems: Windows®, FreeBSD, Linux
• Programming Languages/Technologies:
  • PHP4/5 (PEAR, JpGraph, Smarty, ADOdb, SimpleXML, fPDF)
  • Ruby (Ruby On Rails, RSpec)
  • SQL (MySQL 3.23-5.0, PgSQL 8.1-3)
  • XML (XSLT, XPATH, DOM, XHTML)
  • CSS1/2, DHTML, JavaScript (jQuery, Prototype)
  • shell/sed/awk scripting, Perl
  • some personal experience with C/C++, Pascal/Object Pascal (Delphi), Java, Prolog, Erlang, Lisp
• XP concepts: Refactoring (manualy), Unit Tests (PHPUnit1/2, RSpec)
• Source control: CVS, Subversion, Git
• UML, workflow and architecture design
• Development environments: VIm, dbg/xdebug/ruby-debug, gdb, php-cli/irb, GNU gcc
• TCP/IP protocol family: HTTP 1.0/1.1, HTTPS, POP3, SMTP, FTP, NNTP, RADIUS, PPP/PPPoE/PPTP, BGP, Netflow.V5, DNS
• Understanding of Internet routing principles
• Understanding of H323 family protocols signaling
• VoIP protocols: H323, SIP, IAX
• Standards: IEEE 802.3, 802.1q, 802.1x, 802.11a,b,g
• DB Performance tuning (experience whith ~120G tables on MySQL)
• Operational experience with the equipment:
  • ADSL/2/2+, SHDSL, VDSL (IPDSLAMs and Modems of different vendors)
  • The active network equipment (switches) of the next vendors Cisco, Lucent, Nortel, Asotel, D-Link
  • Hardware VoIP FXO/FXS gateways, PBX, SoftSwitch (Mera), IP-phones
  • WiFi/Radio equipments
  • Access-servers (Cicsco, Lucent)

Job experience:

1. GUI Team Developer

   Desk Corporation

   http://odesk.com

   (Privately Held; 11-50 employees; Internet industry)

   February 2007 — Present (1 year 4 months)

   oDesk Profile: http://www.odesk.com/users/PHP-Developer_~~2e2987e9c627cde9
   Smarty, XML, RPC using cURL, fPDF, working with Quickbase, DHTML coding for oDesk Corporation internal web applications as well as public ones.

2. NOC Engineer

   TopNET ISP

   http://topnet.ua

   (Privately Held; 11-50 employees; Internet industry)

   November 2002 — January 2007 (4 year 3 month)

   • Construction of system of the VPN access to Internet in Kiev (~ 1K users)
   • Construction of billing-systems of the VPN in Kiev and branch in Kamyanec-Podolski
   • Construction of Dial Up+Callback access to Internet in Kiev and branch in Kamyanec-Podolski
   • Creation of the WEB-interface for management DB/sessions of users VPN/Dial up (summary ~3K users)
   • Creation of a control system and the marketing analysis of use of scratch-cards
   • Creation of the interface for traffic accounts management for users of the leased lines, based on Cisco NetFlow protocol
   • Creation of system of the account of access to the Internet using WiFi HotSpots
   • Adjustment of the equipment (Dynamix, Comtrend, Asotel, D-Link, Corecess, Zyxel, Cisco Catalyst)
   • Creation of the web-interface for domain names management
   • Script programming (sh/bash, tcsh, Perl, PHP)
   • Support/extending some sites:
     • http://job.kiev.ua
     • http://prosex.com.ua
     • http://muzika.com.ua
     • http://referat.com.ua
     • http://kvitka.ua
   • Installation/adjustment/support of server configurations on the *NIX-family OS (FreeBSD, Linux) basis:
     • router: zebra, ospfd, bgpd, natd, ipnat, ipfw, samba, squid
     • hosting: Apache, PHP, MySQL, PgSQL, Perl
     • mailserver: SendMail/Exim, qpoper, imapd, ntpd
     • IPPBX: Asterisk
   • Technical/program consultation of clients

Education:

1. National Technical University of Ukraine "KPI"

   http://ntu-kpi.kiev.ua

   2000 — 2006 (incomplete)

   Scientific Research Institute DAOSI (НДI Автоматизацiї Проектування Динамiчних Об'єктiв та Систем - АПРОДОС).

   Specialization: The software of the Automated systems (Програмне забезпечення автоматизованих систем).

   Activities and Societies:

   • Participation in republican Student scientific Olympiads in mathematics
   • Administrator of Hostel's Network

2. Kherson Regional Lyceum

   http://www.kherson-licey.net.ua/

   1997 — 2000 (Silver medal for personal successes in education)

   Specializations: physics, mathematics, chemistry and biology.

   Activities and Societies:

   • Prize-winning places on regional and republican scientific Olympiads in the physics chemistry, mathematics, computer science.
   • Participation in republican Tournaments of Young Physicists (Турнір Юних Фізиків — ТЮФ), Young Chemists (Всеукраїнський турнір юних хіміків — ТЮХ)
   • The third command place in Tournament of Young Inventors and Rationalizes (Всеукраїнський турнір юних винахідників і раціоналізаторів — ТЮВіР).
   • The second place in physics at regional competition of a Small Academy of Science (Мала Академія Наук України — МАН).