Adrian is the founder of Polish Java User Group. He was involved in organizing few Java conferences in Poland since 2000. In 2008 thanks to Radoslaw Holewa got involved into idea of GeeCON. He used to be Java/JEE developer, trainer, book author, translator (Thinking in Java 2nd) and entrepreneur. Recently back to work on his PhD thesis on software merging after refactoring in the distributed environment.