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< meta name = "url" content = "resume/" >
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< title > Resume< / title >
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Resume
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< span id = "keyword-list-button" > [ want some keywords only? click this! ]< / span >
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Keywords go here!
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2022-06-18 06:12:24 +00:00
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If you’ < a href = "{filename}work-preferences.rst" > my preferences< / a > before reading on. It will save both of us valuable time.
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2019-11-05 05:21:56 +00:00
< div itemscope itemtype = "http://schema.org/Person" >
< p >
I am < span class = "b" itemprop = "name" > Gergely Polonkai< / span > (sometimes referred
to as < span itemprop = "nickname" > W00d5t0ck< / span > or < span
itemprop="nickname">Polesz< / span > ), a < span class = "b" itemprop = "jobTitle" > software
developer, systems engineer and administrator< / span > . I was born on < span
class="b" itemprop="birthDate">7 March, 1983< / span > in Budapest, Hungary. I spent
my life moving here-and-there in the country, and finally settled in < span
class="b" itemprop="address" itemscope itemtype="http://schema.org/Address"> < span
itemprop="locality">Veresegyház< / span > < / span > .
< / p >
< p >
You can reach me on < span class = "b" itemprop = "email" > gergely@polonkai.eu< / span > ,
or by phone on < span class = "b" itemprop = "telephone" > +36 (30) 7375-706< / span > . I
fluently speak and write < span class = "b" > English< / span > and < span
class="b">Hungarian< / span > and currently learning Icelandic.
< / p >
< p >
I have < span class = "b" > graduated in 2001< / span > from < span class = "i" > Táncsics
Mihály Szakközépiskola, Szakiskola és Kollégium< / span > , an architecture high
school based in Veszprém, Hungary. There, I learned about < span
class="b">electricity and elevators< / span > , while getting my feet wet in the area
of IT systems engineering. Together with some teachers, we developed < span
class="b keyword" title="network building">the IT infrastructure of the school,
building it from scratch< / span > with < span class = "b keyword" > Windows XP< / span >
based clients, and < span class = "b keyword" > Debian GNU/Linux< / span > servers with
< span class = "b keyword" > Squid proxy< / span > , an < span class = "b keyword" > Apache
httpd< / span > web server, < span class = "b keyword" > Exim< / span > +< span class = "b
keyword">Courier IMAP< / span > based internal mailing and a < span class = "b
keyword">Samba file server< / span > . Meanwhile, I have created the school’
< span class = "b keyword" title = "web development" > web page< / span > using < span
class="b keyword">Perl CGI< / span > , and later it’ < span class = "b
keyword">PHP< / span > . Although I did that as a student, I consider it my first
job.
< / p >
< p >
My first contract was made in < span class = "b" > 2002< / span > with a small Budapest
based ISP that served Internet connection to a large warren. I have mastered Linux
based < span class = "b keyword" title = "firewalls" > firewalling and routing< / span >
there using < span class = "b keyword noupper" > iptables< / span > , and < span class = "b
keyword" title="QoS">tc for QoS< / span > . I have also created a < span class = "b" > web
page< / span > for the company using < span class = "b keyword" > PHP< / span > and < span
class="b keyword" title="MySQL database development">MySQL< / span > .
< / p >
< p >
After that I contracted with a small < span class = "b" > web development
company< / span > in < span class = "b" > 2004< / span > . Here I was in the role of both a
< span class = "b keyword" title = "web development" > web developer< / span > and a < span
class="b keyword" title="Systems administration">systems administrator< / span > . I
have mastered < span class = "b keyword" > PHP< / span > there, together with < span
class="b keyword">MySQL administration< / span > . I also built a small < span class = "b
keyword" title="routers">router< / span > /< span class = "b keyword"
title="firewalls">firewall< / span > out of a PC for office needs.
< / p >
< p >
My next job came in < span class = "b" > 2006< / span > , when I contracted with a small
< span class = "b" > VoIP company< / span > developing a call center software based on
< span class = "b keyword" > Asterisk< / span > . My job here was to create a base system
for this software as small as possible, while managing the old, Ubuntu based
ones. For the new version we targeted < span class = "b keyword" > Gentoo Linux< / span >
because of its possible small size, and performance reasons.
< / p >
< p >
The job that followed was with a world-wide IT services company in < span
class="b">2007< / span > , where I became a member of a large team supporting and
administering several thousand servers, mostly based on < span class = "b
keyword">Red Hat Enterprise Linux< / span > and < span class = "b keyword" > SUSE Linux
Enterprise Server< / span > . There I mastered cluster technologies (both < span
class="b keyword">Heartbeat 2< / span > and < span class = "b keyword" > Red Hat
Cluster< / span > ), < span class = "b keyword" > SAN< / span > , < span class = "b keyword
noupper">iSCSI< / span > and < span class = "b keyword" > NFS< / span > based storages, < span
class="b keyword">Apache httpd< / span > and < span class = "b keyword" > Tomcat< / span >
web servers, administration of < span class = "b keyword" title = "MySQL
administration">MySQL< / span > and < span class = "b keyword" title = "Oracle 10g
Database Administration">Oracle 10g Database< / span > s, < span class = "b
keyword">Bacula< / span > based backup, < span class = "b keyword" > Windows 2003
Server< / span > and < span class = "b keyword" > Windows Server 2008< / span > (both
standalone and cluster) with < span class = "b keyword" > Active Directory< / span > ,
< span class = "b keyword" > Group Policy< / span > , < span class = "b keyword" > Microsoft
Exchange Server 2005< / span > and < span class = "b keyword" > Microsoft SQL Server
2005< / span > , < span class = "b keyword" > Xen Open Source< / span > virtualization, < span
class="b keyword">Citrix XenServer< / span > and < span class = "b keyword"
title="Citrix XenApp">XenApp< / span > , < span class = "b keyword" > VMware ESXi< / span >
and < span class = "b keyword" title = "VMware vSphere" > vSphere< / span > , < span class = "b
keyword">Nagios< / span > monitoring (and < span class = "b keyword" > monitoring< / span >
in general), and last, but not least, < span class = "b keyword" > Linux
hardening< / span > (< span class = "b keyword" > SELinux< / span > , firewalls of different
kinds, fighting < span class = "b keyword" > application security< / span > issues).
< / p >
< p >
All this knowledge came in very handy, when I went to a leading Hungarian
financial company in < span class = "b" > 2010< / span > . The IT infrastructure was in a
very bad shape there, and my job was to rebuild the Linux parts from scratch. We
utilized < span class = "b keyword" > Debian GNU/Linux< / span > servers (both standalone
and < span class = "b keyword" > Heartbeat 2< / span > clusters), < span class = "b
keyword">Apache httpd< / span > web servers, < span class = "b
keyword">Exim< / span > +< span class = "b keyword" > Courier IMAP< / span > for mailing,
< span class = "b keyword" > Bacula< / span > based backup, < span class = "b keyword"
title="MySQL administration">MySQL< / span > and < span class = "b keyword"
title="PostgreSQL administration">PostgreSQL< / span > database servers, < span
class="b">Oracle Database< / span > s (both < span class = "keyword" title = "Oracle 10g
Database Administration">10g< / span > and < span class = "keyword" title = "Oracle 11g
Database Administration">11g< / span > ), < span class = "b" > Microsoft SQL Server< / span > s
(both < span class = "keyword" title = "Microsoft SQL Server 2005" > 2005< / span > and
< span class = "keyword" title = "Microsoft SQL Server 2008" > 2008< / span > ), < span
class="b keyword">Windows 2003 Server< / span > and < span class = "b keyword" > Windows
Server 2008< / span > (both standalone and clusters), < span class = "b keyword" > Active
Directory< / span > , < span class = "b keyword" > Group Policy< / span > , centralised < span
class="b keyword">ESET NOD32 anti-virus< / span > , < span class = "b keyword" > Windows
cluster< / span > based < span class = "b keyword" title = "Microsoft File Server" > file
server with AD backend< / span > , < span class = "b keyword" > WSUS< / span > , < span class = "b
keyword">OTRS::ITSM< / span > helpdesk, < span class = "b keyword" > Zabbix< / span > based
monitoring, virtualization with < span class = "b keyword" > Citrix XenServer< / span > ,
IT security solutions with < span class = "b keyword" > SonicWall< / span > appliances,
< span class = "b keyword" > SELinux< / span > , < span class = "b keyword" > Snort< / span > and
< span class = "b keyword noupper" > iptables< / span > , < span class = "b
keyword">Perl< / span > for system administration scripts, and < span class = "b
keyword">PHP< / span > and the < span class = "b keyword" > Symfony 2< / span > framework for
internal web development. Although much has changed in this list since then, it
was my best and most challenging experience so far.
< / p >
< p >
I left that company in < span class = "b" > 2013< / span > to work as a < span
class="b">freelancer developer< / span > and a < span class = "b" > systems
engineer< / span > for a < span class = "b" > startup network monitoring
company< / span > . Here we were building a help desk system using open source
products like < span class = "b keyword" > OTRS::ITSM< / span > , < span class = "b
keyword">OpenLDAP< / span > , and < span class = "b keyword" > Zabbix< / span > . I also dug my
nose into < span class = "b keyword" > Docsis< / span > based ISP networks and < span
class="b keyword">SIP< / span > -based telephony.
< / p >
< p >
Unfortunately our main employer went bankrupt in < span class = "b" > 2014< / span > , so
after a few months of freelancing I got a new job at the R& D division of a
leading telecommunications company. My current role is pretty close to
DevOps. Nowadays I’ < span class = "b keyword" > Django< / span > -based
internal web application, while maintaining internal scripts written in both < span
class="b keyword">Perl< / span > , < span class = "b keyword" > Python< / span > , < span
class="b keyword">bash< / span > and < span class = "b keyword" > tcsh< / span > or trying to
migrate the internal source code repositories from < span class = "b
keyword">ClearCase< / span > to < span class = "b keyword" > Git< / span > .
< / p >
< p >
I left that company in 2016, as such a slow moving giant couldn’
with my pace. I signed with another startup creating games capable of analysing
work behaviour. Here we mainly use < span class = "b keyword" > Flask< / span > , < span
class="b keyword">Cassandra< / span > , and < span class = "b keyword" > Tensorflow< / span > .
Unlike the previous one, this is a true learning organization, and given its size,
it is capable of taking quick turns if market changes (and that’
need).
< / p >
< p >
In my < span class = "b" > free time< / span > , I wander in forests, take pictures, and
sometimes manipulate them with the < span class = "b keyword" > GIMP< / span > . Sometimes
I < span class = "b" > write< / span > short fantasy or sci-fi novels using < span class = "b
keyword">LibreOffice< / span > . I am also developing some software in < span class = "b
keyword">C< / span > , < span class = "b keyword" > Python< / span > , and < span class = "b
keyword">Vala< / span > , whose source code is managed with < span class = "b
keyword">Git< / span > . When I’
news on several technical areas, mostly IT and engineering, or give a try to a new
programming language in the name of “why not?”.
< / p >
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< div id = "keywords" > < span id = "keywords-close" > < / span > < span id = "keywords-list" > < / span > < / div >
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var kw = (tag.title || tag.textContent).trim().replace(/\n */, ' ');
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