Sebastian Marek has over 12 years of experience in software engineering. Very passionate about quality in software, he loves to write and support code that reliably works. Strongly supporting open source movement, he occasionally contributes to number of different open source projects. He loves to share his passions, knowledge and experience by speaking at various conferences and writing articles for magazines. In his free time he explores medieval castles and dreams that one day he will be able to live in a castle and wear a full plate armour whenever he wants.