I started working with Linux and *BSD in late 90's, I worked as Linux and FreeBSD system administrator in a software house. In 2005 I founded my own software house, we create web solutions, hosting and ICT solutions. From 2008 I am an OpeBSD committer and I develop ports and some system daemons. In 2012 I published 3 articles for BSD Magazine about npppd(8), a pptp/l2tp vpn daemon, mysql-zrm and nmap. I gave some talks about relayd (in 2012), npppd (2013) and LibreSSL (Cebit 2015). I gave talks about OpenSMTPD and Elasticsearch in 2015 and 2016 Linux Europe summits.