265 lines
16 KiB
HTML
265 lines
16 KiB
HTML
<html>
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<head>
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<meta name="url" content="resume/">
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<meta name="save_as" content="resume/index.html">
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<meta name="status" content="published">
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<title>Resume</title>
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</head>
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<body>
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<h3>
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Resume
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<span
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id="keywords-button"
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data-toggle="popover"
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data-placement="bottom"
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role="button"
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tabindex="0"
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data-trigger="focus"
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>
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<span id="keyword-list-button">[ want some keywords only? click this! ]</span>
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<div id="keyword-list-wrapper">
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<div id="keyword-list">
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Keywords go here!
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</div>
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</div>
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</span>
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</h3>
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<div>
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If you’re a recruiter (and why else would you be here?), you may want to check out
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<a href="{filename}work-preferences.rst">my preferences</a> before reading on.
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It will save both of us valuable time.
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</div>
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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> (sometimes referred
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to as <span itemprop="nickname">W00d5t0ck</span> or <span
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itemprop="nickname">Polesz</span>), a <span class="b" itemprop="jobTitle">software
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developer, systems engineer and administrator</span>. I was born on <span
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class="b" itemprop="birthDate">7 March, 1983</span> in Budapest, Hungary. I spent
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my life moving here-and-there in the country, and finally settled in <span
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class="b" itemprop="address" itemscope itemtype="http://schema.org/Address"> <span
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itemprop="locality">Veresegyház</span></span>.
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</p>
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<p>
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You can reach me on <span class="b" itemprop="email">gergely@polonkai.eu</span>,
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or by phone on <span class="b" itemprop="telephone">+36 (30) 7375-706</span>. I
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fluently speak and write <span class="b">English</span> and <span
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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> from <span class="i">Táncsics
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Mihály Szakközépiskola, Szakiskola és Kollégium</span>, an architecture high
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school based in Veszprém, Hungary. There, I learned about <span
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class="b">electricity and elevators</span>, while getting my feet wet in the area
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of IT systems engineering. Together with some teachers, we developed <span
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class="b keyword" title="network building">the IT infrastructure of the school,
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building it from scratch</span> with <span class="b keyword">Windows XP</span>
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based clients, and <span class="b keyword">Debian GNU/Linux</span> servers with
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<span class="b keyword">Squid proxy</span>, an <span class="b keyword">Apache
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httpd</span> web server, <span class="b keyword">Exim</span>+<span class="b
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keyword">Courier IMAP</span> based internal mailing and a <span class="b
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keyword">Samba file server</span>. Meanwhile, I have created the school’s first
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<span class="b keyword" title="web development">web page</span> using <span
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class="b keyword">Perl CGI</span>, and later it’s replacement in <span class="b
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keyword">PHP</span>. Although I did that as a student, I consider it my first
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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 a small Budapest
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based ISP that served Internet connection to a large warren. I have mastered Linux
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based <span class="b keyword" title="firewalls">firewalling and routing</span>
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there using <span class="b keyword noupper">iptables</span>, and <span class="b
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keyword" title="QoS">tc for QoS</span>. I have also created a <span class="b">web
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page</span> for the company using <span class="b keyword">PHP</span> and <span
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class="b keyword" title="MySQL database 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 development
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company</span> in <span class="b">2004</span>. Here I was in the role of both a
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<span class="b keyword" title="web development">web developer</span> and a <span
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class="b keyword" title="Systems administration">systems administrator</span>. I
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have mastered <span class="b keyword">PHP</span> there, together with <span
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class="b keyword">MySQL administration</span>. I also built a small <span class="b
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keyword" title="routers">router</span>/<span class="b keyword"
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title="firewalls">firewall</span> out of a PC for office 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 contracted with a small
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<span class="b">VoIP company</span> developing a call center software based on
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<span class="b keyword">Asterisk</span>. My job here was to create a base system
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for this software as small as possible, while managing the old, Ubuntu based
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ones. For the new version we targeted <span class="b keyword">Gentoo Linux</span>
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because 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 company in <span
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class="b">2007</span>, where I became a member of a large team supporting and
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administering several thousand servers, mostly based on <span class="b
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keyword">Red Hat Enterprise Linux</span> and <span class="b keyword">SUSE Linux
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Enterprise Server</span>. There I mastered cluster technologies (both <span
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class="b keyword">Heartbeat 2</span> and <span class="b keyword">Red Hat
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Cluster</span>), <span class="b keyword">SAN</span>, <span class="b keyword
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noupper">iSCSI</span> and <span class="b keyword">NFS</span> based storages, <span
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class="b keyword">Apache httpd</span> and <span class="b keyword">Tomcat</span>
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web servers, administration of <span class="b keyword" title="MySQL
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administration">MySQL</span> and <span class="b keyword" title="Oracle 10g
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Database Administration">Oracle 10g Database</span>s, <span class="b
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keyword">Bacula</span> based backup, <span class="b keyword">Windows 2003
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Server</span> and <span class="b keyword">Windows Server 2008</span> (both
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standalone and cluster) with <span class="b keyword">Active Directory</span>,
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<span class="b keyword">Group Policy</span>, <span class="b keyword">Microsoft
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Exchange Server 2005</span> and <span class="b keyword">Microsoft SQL Server
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2005</span>, <span class="b keyword">Xen Open Source</span> virtualization, <span
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class="b keyword">Citrix XenServer</span> and <span class="b keyword"
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title="Citrix XenApp">XenApp</span>, <span class="b keyword">VMware ESXi</span>
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and <span class="b keyword" title="VMware vSphere">vSphere</span>, <span class="b
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keyword">Nagios</span> monitoring (and <span class="b keyword">monitoring</span>
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in general), and last, but not least, <span class="b keyword">Linux
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hardening</span> (<span class="b keyword">SELinux</span>, firewalls of different
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kinds, fighting <span class="b keyword">application security</span> 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 leading Hungarian
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financial company 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 parts from scratch. We
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utilized <span class="b keyword">Debian GNU/Linux</span> servers (both standalone
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and <span class="b 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 IMAP</span> for mailing,
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<span class="b keyword">Bacula</span> based backup, <span class="b keyword"
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title="MySQL administration">MySQL</span> and <span class="b keyword"
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title="PostgreSQL administration">PostgreSQL</span> database servers, <span
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class="b">Oracle Database</span>s (both <span class="keyword" title="Oracle 10g
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Database Administration">10g</span> and <span class="keyword" title="Oracle 11g
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Database Administration">11g</span>), <span class="b">Microsoft SQL Server</span>s
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(both <span class="keyword" title="Microsoft SQL Server 2005">2005</span> and
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<span class="keyword" title="Microsoft SQL Server 2008">2008</span>), <span
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class="b keyword">Windows 2003 Server</span> and <span class="b keyword">Windows
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Server 2008</span> (both standalone and clusters), <span class="b keyword">Active
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Directory</span>, <span class="b keyword">Group Policy</span>, centralised <span
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class="b keyword">ESET NOD32 anti-virus</span>, <span class="b keyword">Windows
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cluster</span> based <span class="b keyword" title="Microsoft File Server">file
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server with AD backend</span>, <span class="b keyword">WSUS</span>, <span class="b
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keyword">OTRS::ITSM</span> helpdesk, <span class="b keyword">Zabbix</span> based
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monitoring, virtualization with <span class="b keyword">Citrix XenServer</span>,
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IT security solutions with <span class="b keyword">SonicWall</span> appliances,
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<span class="b keyword">SELinux</span>, <span class="b keyword">Snort</span> and
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<span class="b keyword noupper">iptables</span>, <span class="b
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keyword">Perl</span> for system administration scripts, and <span class="b
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keyword">PHP</span> and the <span class="b keyword">Symfony 2</span> framework for
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internal web development. Although much has changed in this list since then, it
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was my best and most 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 a <span
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class="b">freelancer developer</span> and a <span class="b">systems
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engineer</span> for a <span class="b">startup network monitoring
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company</span>. Here we were building a help desk system using open source
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products like <span class="b keyword">OTRS::ITSM</span>, <span class="b
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keyword">OpenLDAP</span>, and <span class="b keyword">Zabbix</span>. I also dug my
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nose into <span class="b keyword">Docsis</span> based ISP networks and <span
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class="b 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 in <span class="b">2014</span>, so
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after a few months of freelancing I got a new job at the R&D division of a
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leading telecommunications company, a role pretty close to DevOps. I also
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developed some internal, <span class="b keyword">Django</span>-based web
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applications, while maintaining internal scripts written in both <span
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class="b keyword">Perl</span>, <span class="b keyword">Python</span>, <span
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class="b keyword">bash</span> and <span class="b keyword">tcsh</span> or helping
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in the migration of the internal source code repositories from <span class="b
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keyword">ClearCase</span> to <span class="b 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 really keep up
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with my pace. I signed with another startup creating games capable of analysing
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work behaviour. Here we mainly used <span class="b keyword">Flask</span> and
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<span class="b keyword">FastAPI</span>. I also built the infrastructure from the
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ground up, migrating the original <span class="b keyword">Docker</span>-based
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workflow to <span class="b keyword">DigitalOcean</span>’s
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<span class="b keyword">Kubernetes</span>. We collected logs with
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<span class="b keyword">Loki</span>, metrics with
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<span class="b keyword">Prometheus</span> and visualized both with
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<span class="b keyword">Grafana</span>, managing the whole thing with
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<span class="b keyword">Terraform</span>.
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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, take pictures, and
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sometimes manipulate them with the <span class="b keyword">GIMP</span>. Sometimes
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I <span class="b">write</span> short fantasy or sci-fi novels using
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<span class="b keyword">LibreOffice</span>. I am also developing some software in
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<span class="b keyword">C</span>, <span class="b keyword">Python</span>, and
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<span class="b keyword">Vala</span>, whose source code is managed with
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<span class="b keyword">Git</span>. Being an avid
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<span class="b keyword">Emacs</span> user I spend a considerable amount of my
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screen-time learning about and extending my editor. When I’m not in the mood for
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writing, I go and check out the news on several technical areas, mostly IT and
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engineering, or give a try to a new programming 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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function generateKeywords() {
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var keywords = new Array();
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var keyword_tags = document.querySelectorAll('.keyword');
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keyword_tags.forEach(function(tag, idx) {
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var kw = (tag.title || tag.textContent).trim().replace(/\n */, ' ');
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var firstLetter = kw.charAt(0);
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var remainder = kw.slice(1);
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if (!tag.classList.contains('noupper')) {
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firstLetter = firstLetter.toUpperCase();
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}
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kw = document.createElement('span');
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kw.classList.add('keyword-first-letter');
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kw.innerText = firstLetter;
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keywords.push(kw.outerHTML + remainder);
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});
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return keywords
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.filter(function(el, index) {
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return index === keywords.indexOf(el);
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})
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.sort(function(a, b) {
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if (a.toLowerCase() < b.toLowerCase()) {
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return -1;
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} else if (a.toLowerCase() > b.toLowerCase()) {
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return 1;
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}
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return 0;
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});
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}
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var keywords = generateKeywords();
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document.getElementById('keyword-list').innerHTML = keywords.join(' | ');
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document.getElementById('keyword-list-button')
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.addEventListener('click', function() {
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var wrapper = document.getElementById('keyword-list-wrapper');
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wrapper.style.display = (wrapper.offsetParent) ? 'none' : 'block';
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});
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</script>
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</body>
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</html>
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