<p>You can reach me on <spanclass="b"itemprop="email">gergely<spanclass="at-obfuscation"></span>polonkai.eu</span>, or by phone on <spanclass="b"itemprop="telephone">+36 (30) 7375-706</span>. I fluently speak and write <spanclass="b">English</span> and <spanclass="b">Hungarian</span>.</p>
<p>I have <spanclass="b">graduated in 2001</span> from <spanclass="i">Táncsics Mihály Szakközépiskola, Szakiskola és Kollégium</span>, an architecture high school based in Veszprém, Hungary. There, I learned about <spanclass="b">electricity and elevators</span>, while getting my feet wet in the area of IT systems engineering. Together with some teachers, we developed <spanclass="b keyword"title="network building">the IT infrastructure of the school, building it from scratch</span> with <spanclass="b keyword">Windows XP</span> based clients, and <spanclass="b keyword">Debian GNU/Linux</span> servers with <spanclass="b keyword">Squid proxy</span>, an <spanclass="b keyword">Apache httpd</span> web server, <spanclass="b keyword">Exim</span>+<spanclass="b keyword">Courier IMAP</span> based internal mailing and a <spanclass="b keyword">Samba file server</span>. Meanwhile, I have created the school’s first <spanclass="b keyword"title="web development">web page</span> using <spanclass="b keyword">Perl CGI</span>, and later it’s replacement in <spanclass="b keyword">PHP</span>. Although I did that as a student, I consider it my first job. You can contact <spanclass="b">Imre Pataki</span> at +36 (20) 970-5830 if you need more information.</p>
<p>My first contract was made in <spanclass="b">2002</span> with <spanclass="b">GaTeS Group Kft.</span>, a Budapest based <spanclass="b">ISP</span> that served Internet connection to a large warren. I have mastered Linux based <spanclass="b keyword"title="firewalls">firewalling and routing</span> there using <spanclass="b keyword noupper">iptables</span>, and <spanclass="b keyword"title="QoS">tc for QoS</span>. I have also created a <spanclass="b">web page</span> for the company using <spanclass="b keyword">PHP</span> and <spanclass="b keyword"title="MySQL database development">MySQL</span>. The company went through several merges since then. My only contact was Ákos Szabó, whose phone number is not reachable any more.</p>
<p>After that, I contracted with <spanclass="b">Webvilág Kft.</span> in <spanclass="b">2004</span>. It was a <spanclass="b">web development company</span>, where I was in the role of both a <spanclass="b keyword"title="web development">web developer</span> and a <spanclass="b keyword"title="Systems administration">systems administrator</span>. I have mastered <spanclass="b keyword">PHP</span> there, together with <spanclass="b keyword">MySQL administration</span>. I also built a small <spanclass="b keyword"title="routers">router</span>/<spanclass="b keyword"title="firewalls">firewall</span> out of a PC for office needs. Althogh the company has changed its name to Fejlesztők Háza Kft., you may still contact <spanclass="b">Péter Bali</span> at +36 (70) 318-4050.</p>
<p>My next job came in <spanclass="b">2006</span>, when I contracted with <spanclass="b">eWorldCom Kft.</span>, a small <spanclass="b">VoIP company</span>, developing call center software based on <spanclass="b keyword">Asterisk</span>. My job was to create a small base system for this software, while managing the old, Ubuntu based ones. For the new version, we targeted <spanclass="b keyword">Gentoo Linux</span> because of its possible small size, and performance reasons. The company since then fusioned with Virtual Call Center Kft. You may reach my ex-bosses (Tamás Jalsovszky and Szabolcs Tóth) there, altough I don’t know any of their new contacts.</p>
<p>After that, I contracted with <spanclass="b">Webvilág Kft.</span> in <spanclass="b">2004</span>. It was a <spanclass="b">web development company</span>, where I was in the role of both a <spanclass="b keyword"title="web development">web developer</span> and a <spanclass="b keyword"title="Systems administration">systems administrator</span>. I have mastered <spanclass="b keyword">PHP</span> there, together with <spanclass="b keyword">MySQL administration</span>. I also built a small <spanclass="b keyword"title="routers">router</span>/<spanclass="b keyword"title="firewalls">firewall</span> out of a PC for office needs. Although the company has changed its name to Fejlesztők Háza Kft., you may still contact <spanclass="b">Péter Bali</span> at +36 (70) 318-4050.</p>
<p>My next job came in <spanclass="b">2006</span>, when I contracted with <spanclass="b">eWorldCom Kft.</span>, a small <spanclass="b">VoIP company</span>, developing a call center software based on <spanclass="b keyword">Asterisk</span>. My job was to create a small base system for this software, while managing the old, Ubuntu based ones. For the new version we targeted <spanclass="b keyword">Gentoo Linux</span> because of its possible small size, and performance reasons. The company since then merged with Virtual Call Center Kft. You may reach my ex-bosses (Tamás Jalsovszky and Szabolcs Tóth) there, altough I don’t know any of their new contacts.</p>
<p>The job that followed was with <spanclass="b">Lufthansa Systems Hungary</span> in <spanclass="b">2007</span>, where I became the member of a large team supporting and administering several thousand servers, mostly based on <spanclass="b keyword">Red Hat Enterprise Linux</span> and <spanclass="b keyword">SUSE Linux Enterprise Server</span>. There I mastered cluster technologies (<spanclass="b keyword">Heartbeat 2</span> and <spanclass="b keyword">Red Hat Cluster</span>), <spanclass="b keyword">SAN</span>, <spanclass="b keyword noupper">iSCSI</span> and <spanclass="b keyword">NFS</span> based storages, <spanclass="b keyword">Apache httpd</span> and <spanclass="b keyword">Tomcat</span> web servers, administration of <spanclass="b keyword"title="MySQL administration">MySQL</span> and <spanclass="b keyword"title="Oracle 10g Database Administration">Oracle 10g Database</span>s, <spanclass="b keyword">Bacula</span> based backup, <spanclass="b keyword">Windows 2003 Server</span> and <spanclass="b keyword">Windows Server 2008</span> (both standalone and cluster) with <spanclass="b keyword">Active Directory</span>, <spanclass="b keyword">Group Policy</span>, <spanclass="b keyword">Microsoft Exchange Server 2005</span> and <spanclass="b keyword">Microsoft SQL Server 2005</span>, <spanclass="b keyword">Xen Open Source</span> virtualization, <spanclass="b keyword">Citrix XenServer</span> and <spanclass="b keyword"title="Citrix XenApp">XenApp</span>, <spanclass="b keyword">VMware ESXi</span> and <spanclass="b keyword"title="VMware vSphere">vSphere</span>, <spanclass="b keyword">Nagios</span> monitoring (and <spanclass="b keyword">monitoring</span> in general), and last, but not least, <spanclass="b keyword">Linux hardening</span> (<spanclass="b keyword">SELinux</span>, firewalls of different kinds, fighting <spanclass="b keyword">application security</span> issues). My boss was <spanclass="b">László Kiss-Kalló</span>, who can be reached on +36 (30) 429-9483.</p>
<p>All this knowledge came in very handy, when I went to <spanclass="b">Brokernet Group Zrt.</span> in <spanclass="b">2010</span>. The IT infrastructure was in a very bad shape there, and our job was to rebuild most of it from scratch. We utilized <spanclass="b keyword">Debian GNU/Linux</span> servers (both standalone and <spanclass="b keyword">Heartbeat 2</span> clusters), <spanclass="b keyword">Apache httpd</span> web servers, <spanclass="b keyword">Exim</span>+<spanclass="b keyword">Courier IMAP</span> for mailing, <spanclass="b keyword">Bacula</span> based backup, <spanclass="b keyword"title="MySQL administration">MySQL</span> and <spanclass="b keyword"title="PostgreSQL administration">PostgreSQL</span> database servers, <spanclass="b">Oracle Database</span>s (both <spanclass="keyword"title="Oracle 10g Database Administration">10g</span> and <spanclass="keyword"title="Oracle 11g Database Administration">11g</span>), <spanclass="b">Microsoft SQL Server</span>s (both <spanclass="keyword"title="Microsoft SQL Server 2005">2005</span> and <spanclass="keyword"title="Microsoft SQL Server 2008">2008</span>), <spanclass="b keyword">Windows 2003 Server</span> and <spanclass="b keyword">Windows Server 2008</span> (both standalone and clusters), <spanclass="b keyword">Active Directory</span>, <spanclass="b keyword">Group Policy</span>, centralised <spanclass="b keyword">ESET NOD32 antivirus</span>, <spanclass="b keyword">Windows cluster</span> based <spanclass="b keyword"title="Microsoft File Server">file server with AD backend</span>, <spanclass="b keyword">WSUS</span>, <spanclass="b keyword">OTRS::ITSM</span> helpdesk, <spanclass="b keyword">Zabbix</span> based monitoring, virtualization with <spanclass="b keyword">Citrix XenServer</span>, IT security solutions with <spanclass="b keyword">SonicWall</span> appliances, <spanclass="b keyword">SELinux</span>, <spanclass="b keyword">Snort</span> and <spanclass="b keyword noupper">iptables</span>, <spanclass="b keyword">Perl</span> for system administration scripts, and <spanclass="b keyword">PHP</span> and the <spanclass="b keyword">Symfony 2</span> framework for internal web development. Although much has changed in this list since then, it was my best experience so far. You can contact <spanclass="b">Attila Balogh</span> on +36 (30) 924-8179.</p>
<p>Since I left the company in <spanclass="b">2013</span>, I am working as a <spanclass="b">freelancer deloper</span> and a <spanclass="b">systems engeneer</span> for a <spanclass="b">startup network monitoring company</span>. Here we are building a help desk system using open source products like <spanclass="b keyword">OTRS::ITSM</span>, <spanclass="b keyword">OpenLDAP</span>, and <spanclass="b keyword">Zabbix</span>.</p>
<p>In my <spanclass="b">free time</span>, I wander in forests, take pictures, and sometimes manipulate them with the <spanclass="b keyword">GIMP</span>. Sometimes I write short fantasy or sci-fi novels using <spanclass="b keyword">LibreOffice</span>. I am also developing some software in <spanclass="b keyword">C</span>. When I’m not in the mood for writing, I go and check out the news on several technical areas, mostly IT and engineering, or give a try to a new programming language in the name of “why not?”. Currently I’m experimenting with Python.</p>
<p>Although I don’t plan to change my workplace right now, when I do so, I look for firms that can develop my skills and give me financial stability through an interesting job.</p>
<p>All this knowledge came in very handy, when I went to <spanclass="b">Brokernet Group Zrt.</span> in <spanclass="b">2010</span>. The IT infrastructure was in a very bad shape there, and our job was to rebuild most of it from scratch. We utilized <spanclass="b keyword">Debian GNU/Linux</span> servers (both standalone and <spanclass="b keyword">Heartbeat 2</span> clusters), <spanclass="b keyword">Apache httpd</span> web servers, <spanclass="b keyword">Exim</span>+<spanclass="b keyword">Courier IMAP</span> for mailing, <spanclass="b keyword">Bacula</span> based backup, <spanclass="b keyword"title="MySQL administration">MySQL</span> and <spanclass="b keyword"title="PostgreSQL administration">PostgreSQL</span> database servers, <spanclass="b">Oracle Database</span>s (both <spanclass="keyword"title="Oracle 10g Database Administration">10g</span> and <spanclass="keyword"title="Oracle 11g Database Administration">11g</span>), <spanclass="b">Microsoft SQL Server</span>s (both <spanclass="keyword"title="Microsoft SQL Server 2005">2005</span> and <spanclass="keyword"title="Microsoft SQL Server 2008">2008</span>), <spanclass="b keyword">Windows 2003 Server</span> and <spanclass="b keyword">Windows Server 2008</span> (both standalone and clusters), <spanclass="b keyword">Active Directory</span>, <spanclass="b keyword">Group Policy</span>, centralised <spanclass="b keyword">ESET NOD32 anti-virus</span>, <spanclass="b keyword">Windows cluster</span> based <spanclass="b keyword"title="Microsoft File Server">file server with AD backend</span>, <spanclass="b keyword">WSUS</span>, <spanclass="b keyword">OTRS::ITSM</span> helpdesk, <spanclass="b keyword">Zabbix</span> based monitoring, virtualization with <spanclass="b keyword">Citrix XenServer</span>, IT security solutions with <spanclass="b keyword">SonicWall</span> appliances, <spanclass="b keyword">SELinux</span>, <spanclass="b keyword">Snort</span> and <spanclass="b keyword noupper">iptables</span>, <spanclass="b keyword">Perl</span> for system administration scripts, and <spanclass="b keyword">PHP</span> and the <spanclass="b keyword">Symfony 2</span> framework for internal web development. Although much has changed in this list since then, it was my best experience so far. You can contact <spanclass="b">Attila Balogh</span> on +36 (30) 924-8179.</p>
<p>Since I left the company in <spanclass="b">2013</span>, I am working as a <spanclass="b">freelancer developer</span> and a <spanclass="b">systems engineer</span> for a <spanclass="b">startup network monitoring company</span>. Here we are building a help desk system using open source products like <spanclass="b keyword">OTRS::ITSM</span>, <spanclass="b keyword">OpenLDAP</span>, and <spanclass="b keyword">Zabbix</span>.</p>
<p>In my <spanclass="b">free time</span>, I wander in forests, take pictures, and sometimes manipulate them with the <spanclass="b keyword">GIMP</span>. Sometimes I write short fantasy or sci-fi novels using <spanclass="b keyword">LibreOffice</span>. I am also developing some software in <spanclass="b keyword">C</span>, whose source code is managed with <spanclass="b keyword">Git</span>. When I’m not in the mood for writing, I go and check out the news on several technical areas, mostly IT and engineering, or give a try to a new programming language in the name of “why not?”. Currently I’m experimenting with Python.</p>
<p>As an employee I am looking for firms where can I use and develop my skills, while getting financial stability through an interesting job.</p>
