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278 lines
14 KiB
278 lines
14 KiB
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layout: default |
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title: Resume |
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--- |
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<h3>Resume <a id="keywords-button" data-toggle="popover" data-placement="bottom" role="button" tabindex="0" data-trigger="focus">[ want some keywords only? click this! ]</a></h3> |
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<div itemscope itemtype="http://schema.org/Person"> |
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<p> |
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I am <span class="b" itemprop="name">Gergely Polonkai</span> |
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(sometimes referred to |
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as <span itemprop="nickname">W00d5t0ck</span> |
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or <span itemprop="nickname">Polesz</span>), a <span class="b" |
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itemprop="jobTitle">software developer, systems engineer and |
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administrator</span>. I was born on <span class="b" |
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itemprop="birthDate">7 March, 1983</span> in Budapest, |
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Hungary. I spent my life moving here-and-there in the country, |
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and finally settled in <span class="b" itemprop="address" |
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itemscope itemtype="http://schema.org/Address"> |
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<span itemprop="locality">Veresegyház</span></span>. |
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</p> |
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<p> |
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You can reach me on |
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<span class="b" itemprop="email">gergely@polonkai.eu</span>, |
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or by phone on <span class="b" itemprop="telephone">+36 (30) |
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7375-706</span>. I fluently speak and |
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write <span class="b">English</span> |
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and <span class="b">Hungarian</span> and currently learning Icelandic. |
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</p> |
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<p> |
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I have <span class="b">graduated in 2001</span> |
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from <span class="i">Táncsics Mihály Szakközépiskola, |
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Szakiskola és Kollégium</span>, an architecture high school |
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based in Veszprém, Hungary. There, I learned |
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about <span class="b">electricity and elevators</span>, while |
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getting my feet wet in the area of IT systems |
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engineering. Together with some teachers, we |
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developed <span class="b keyword" title="network building">the |
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IT infrastructure of the school, building it from |
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scratch</span> with <span class="b keyword">Windows XP</span> |
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based clients, and <span class="b keyword">Debian |
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GNU/Linux</span> servers with <span class="b keyword">Squid |
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proxy</span>, an <span class="b keyword">Apache httpd</span> |
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web server, <span class="b keyword">Exim</span>+<span class="b |
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keyword">Courier IMAP</span> based internal mailing and |
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a <span class="b keyword">Samba file server</span>. Meanwhile, |
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I have created the school’s first <span class="b keyword" |
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title="web development">web page</span> using <span class="b |
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keyword">Perl CGI</span>, and later it’s replacement |
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in <span class="b keyword">PHP</span>. Although I did that as |
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a student, I consider it my first job. |
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</p> |
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<p> |
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My first contract was made in <span class="b">2002</span> with |
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a small Budapest based ISP that served Internet connection to |
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a large warren. I have mastered Linux based <span class="b |
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keyword" title="firewalls">firewalling and routing</span> |
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there using <span class="b keyword noupper">iptables</span>, |
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and <span class="b keyword" title="QoS">tc for QoS</span>. I |
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have also created a <span class="b">web page</span> for the |
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company using <span class="b keyword">PHP</span> |
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and <span class="b keyword" title="MySQL database |
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development">MySQL</span>. |
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</p> |
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<p> |
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After that I contracted with a small <span class="b">web |
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development company</span> in <span class="b">2004</span>. |
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Here I was in the role of both a <span class="b keyword" |
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title="web development">web developer</span> and |
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a <span class="b keyword" title="Systems |
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administration">systems administrator</span>. I have |
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mastered <span class="b keyword">PHP</span> there, together |
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with <span class="b keyword">MySQL administration</span>. I |
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also built a small <span class="b keyword" |
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title="routers">router</span>/<span class="b keyword" |
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title="firewalls">firewall</span> out of a PC for office |
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needs. |
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</p> |
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<p> |
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My next job came in <span class="b">2006</span>, when I |
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contracted with a small <span class="b">VoIP company</span> |
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developing a call center software based on <span class="b |
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keyword">Asterisk</span>. My job here was to create a base |
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system for this software as small as possible, while managing |
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the old, Ubuntu based ones. For the new version we |
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targeted <span class="b keyword">Gentoo Linux</span> because |
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of its possible small size, and performance reasons. |
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</p> |
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<p> |
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The job that followed was with a world-wide IT services |
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company in <span class="b">2007</span>, where I became a |
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member of a large team supporting and administering several |
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thousand servers, mostly based on <span class="b keyword">Red |
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Hat Enterprise Linux</span> and <span class="b keyword">SUSE |
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Linux Enterprise Server</span>. There I mastered cluster |
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technologies (both <span class="b keyword">Heartbeat 2</span> |
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and <span class="b keyword">Red Hat |
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Cluster</span>), <span class="b |
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keyword">SAN</span>, <span class="b keyword |
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noupper">iSCSI</span> and <span class="b keyword">NFS</span> |
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based storages, <span class="b keyword">Apache httpd</span> |
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and <span class="b keyword">Tomcat</span> web servers, |
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administration of <span class="b keyword" title="MySQL |
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administration">MySQL</span> and <span class="b keyword" |
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title="Oracle 10g Database Administration">Oracle 10g |
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Database</span>s, <span class="b keyword">Bacula</span> based |
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backup, <span class="b keyword">Windows 2003 Server</span> |
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and <span class="b keyword">Windows Server 2008</span> (both |
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standalone and cluster) with <span class="b keyword">Active |
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Directory</span>, <span class="b keyword">Group |
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Policy</span>, <span class="b keyword">Microsoft Exchange |
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Server 2005</span> and <span class="b keyword">Microsoft SQL |
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Server 2005</span>, <span class="b keyword">Xen Open |
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Source</span> virtualization, <span class="b keyword">Citrix |
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XenServer</span> and <span class="b keyword" title="Citrix |
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XenApp">XenApp</span>, <span class="b keyword">VMware |
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ESXi</span> and <span class="b keyword" title="VMware |
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vSphere">vSphere</span>, <span class="b keyword">Nagios</span> |
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monitoring (and <span class="b keyword">monitoring</span> in |
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general), and last, but not least, <span class="b |
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keyword">Linux hardening</span> (<span class="b |
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keyword">SELinux</span>, firewalls of different kinds, |
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fighting <span class="b keyword">application security</span> |
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issues). |
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</p> |
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<p> |
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All this knowledge came in very handy, when I went to a |
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leading Hungarian financial company |
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in <span class="b">2010</span>. The IT infrastructure was in a |
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very bad shape there, and my job was to rebuild the Linux |
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parts from scratch. We utilized <span class="b keyword">Debian |
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GNU/Linux</span> servers (both standalone and <span class="b |
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keyword">Heartbeat 2</span> clusters), <span class="b |
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keyword">Apache httpd</span> web servers, <span class="b |
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keyword">Exim</span>+<span class="b keyword">Courier |
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IMAP</span> for mailing, <span class="b keyword">Bacula</span> |
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based backup, <span class="b keyword" title="MySQL |
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administration">MySQL</span> and <span class="b keyword" |
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title="PostgreSQL administration">PostgreSQL</span> database |
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servers, <span class="b">Oracle Database</span>s |
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(both <span class="keyword" title="Oracle 10g Database |
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Administration">10g</span> and <span class="keyword" |
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title="Oracle 11g Database |
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Administration">11g</span>), <span class="b">Microsoft SQL |
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Server</span>s (both <span class="keyword" title="Microsoft |
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SQL Server 2005">2005</span> and <span class="keyword" |
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title="Microsoft SQL Server 2008">2008</span>), <span class="b |
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keyword">Windows 2003 Server</span> and <span class="b |
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keyword">Windows Server 2008</span> (both standalone and |
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clusters), <span class="b keyword">Active |
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Directory</span>, <span class="b keyword">Group Policy</span>, |
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centralised <span class="b keyword">ESET NOD32 |
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anti-virus</span>, <span class="b keyword">Windows |
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cluster</span> based <span class="b keyword" title="Microsoft |
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File Server">file server with AD |
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backend</span>, <span class="b |
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keyword">WSUS</span>, <span class="b |
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keyword">OTRS::ITSM</span> helpdesk, <span class="b |
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keyword">Zabbix</span> based monitoring, virtualization |
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with <span class="b keyword">Citrix XenServer</span>, IT |
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security solutions with <span class="b |
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keyword">SonicWall</span> appliances, <span class="b |
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keyword">SELinux</span>, <span class="b keyword">Snort</span> |
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and <span class="b keyword |
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noupper">iptables</span>, <span class="b keyword">Perl</span> |
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for system administration scripts, and <span class="b |
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keyword">PHP</span> and the <span class="b keyword">Symfony |
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2</span> framework for internal web development. Although much |
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has changed in this list since then, it was my best and most |
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challenging experience so far. |
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</p> |
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<p> |
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I left that company in <span class="b">2013</span> to work as |
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a <span class="b">freelancer developer</span> and |
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a <span class="b">systems engineer</span> for |
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a <span class="b">startup network monitoring |
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company</span>. Here we were building a help desk system using |
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open source products like <span class="b |
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keyword">OTRS::ITSM</span>, <span class="b |
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keyword">OpenLDAP</span>, and <span class="b |
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keyword">Zabbix</span>. I also dug my nose into <span class="b |
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keyword">Docsis</span> based ISP networks and <span class="b |
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keyword">SIP</span>-based telephony. |
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</p> |
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<p> |
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Unfortunately our main employer went bankrupt |
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in <span class="b">2014</span>, so after a few months of |
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freelancing I got a new job at the R&D division of a |
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leading telecommunications company. My current role is pretty |
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close to DevOps. Nowadays I’m developing a <span class="b |
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keyword">Django</span>-based internal web application, while |
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maintaining internal scripts written in both <span class="b |
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keyword">Perl</span>, <span class="b |
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keyword">Python</span>, <span class="b keyword">bash</span> |
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and |
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<span class="b keyword">tcsh</span> or trying to migrate the |
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internal source code repositories from <span class="b |
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keyword">ClearCase</span> to <span class="b |
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keyword">Git</span>. |
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</p> |
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<p> |
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I left that company in 2016, as such a slow moving giant couldn’t |
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really keep up with my pace. I signed with another startup creating |
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games capable of analysing work behaviour. Here we mainly use |
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<span class="b keyword">Flask</span>, |
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<span class="b keyword">Cassandra</span>, and |
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<span class="b keyword">Tensorflow</span>. Unlike the previous one, |
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this is a true learning organization, and given its size, it is |
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capable of taking quick turns if market changes (and that’s exactly |
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what I need). |
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</p> |
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<p> |
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In my <span class="b">free time</span>, I wander in forests, |
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take pictures, and sometimes manipulate them with |
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the <span class="b keyword">GIMP</span>. Sometimes |
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I <span class="b">write</span> short fantasy or sci-fi novels |
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using <span class="b keyword">LibreOffice</span>. I am also |
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developing some software in <span class="b keyword">C</span>, |
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<span class="b keyword">Python</span>, and |
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<span class="b keyword">Vala</span>, whose source code is managed |
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with <span class="b keyword">Git</span>. When I’m not in the mood |
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for writing, I go and check out the news on several technical areas, |
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mostly IT and engineering, or give a try to a new programming |
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language in the name of “why not?”. |
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</p> |
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</div> |
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<div id="keywords"><span id="keywords-close"></span><span id="keywords-list"></span></div> |
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<script type="text/javascript"> |
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var keywords = null; |
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$(function() { |
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$('[data-toggle="popover"]').popover({ |
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keywords = new Array(); |
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tag = keyword_tags[i]; |
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if ($(tag).attr('title')) { |
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kw = $(tag).attr('title'); |
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} else { |
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kw = $(tag).html(); |
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} |
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first_letter = kw.charAt(0); |
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remainder = kw.slice(1); |
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if (!$(tag).hasClass('noupper')) { |
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kw = '<span class="keyword-first-letter">' + first_letter + '</span>' + remainder; |
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keywords.push(kw); |
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} |
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keywords = $.grep(keywords, function(el, index){return index === $.inArray(el, keywords);}); |
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return keywords.sort(function(a, b) { if (a.toLowerCase() < b.toLowerCase()) return -1; else if (a.toLowerCase() > b.toLowerCase()) return 1; else return 0; }).join(', '); |
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