Android Developer Advocate at Stream. Android/Kotlin tech editor for RayWenderlich.com. University instructor at BME-VIK, teaching Kotlin and Android. A Kotlin enthusiast since the 1.0 of the language. Educator, writer, and speaker, giving talks whenever given the opportunity. Creator of a couple open source libraries, most notably MaterialDrawerKt, Krate, and RainbowCake. One of the top contributors under the Kotlin tag on StackOverflow.