Radosław Holewa
Polish JUG leader and GeeCON co-founder. He is also one of the co-founders of Miquido. a small mobile app development studio located in the heart of beautiful city Krakow, Poland and in Manila, Philippines.
He is crazy about learning new programming languages, not only the new languages for JVM (Ceylon, Kotlin, Scala) but also the "web" programming languages like CoffeeScript and Dart.