Katerina is an Andoid developer and enthusiast from the very beginning. Before that she was developing windows mobile and web applications. She currently lives in Greece and is freelancing for German and Greek companies, among them Karlmax Berlin and In the loop Thessaloniki.
As Android user from the beginning, Matthias started to develop for the platform with version 1.6 in 2009. Since then he is following its progress very enthusiastically and worked on several applications, big and small, featured in the Play Store and as specialized customer solutions. During these years, he also co-founded the GDG Bremen and GDG Hamburg Android, gave several Android related talks and organized developer events around Google technologies in general. Right now he is a Android developer at the Hamburg based startup Jimdo.
Hasan Hoşgel is a dedicated Android developer with over ten years of professional programming experience. Since 2010 doing all day long Android application development. Continuous improvement of the architecture and also quality are his dedication. He worked more than seven years for ImmobilienScout24, Germany’s real estate marketplace leader. As a co-organizer of the “GDG Berlin Android” and as a speaker he attended many mobile conferences and several Google Developer Groups across Europe.
Karolina is a Mobile Engineer at SoundCloud and Android Developer for over 5 years. During the day mobile lover, UX enthusiast and coffee addict. At night crazy geek, that needs to play with whatever technology she finds promising and interesting. Involved in Women Techmakers Berlin group, trying to make Android platform more accessible for everyone.
Volker is a Java veteran and an early adopter of the Android platform. He works at Novoda where he develops Android Apps of all sizes, flavours and colours.
Wolfram has been developing with Java for ages - mostly Java EE based web applications. He started Android development in his spare-time some years ago. He's the author of the blog Grokking Android. He's active in the GDG Düsseldorf and occassionally speaks at GDG meetings or conferences.
christen test reviewer
Ben works in Developer Relations at Google located in London. Here he works to make Android Developer’s live better. Ben is involved with Android and Droidcon since their first public iteration.
Friederike is a passionate Android developer. She is currently based in London working self-employed on health and lifestyle apps. Likes to experiment with clean architecture and improving code quality and development processes. Also practising Plant Driven Development by crafting vegan recipes when not coding. Previously worked on a wide range of apps and games for Android including Badoo and bringing the board games Catan and Carcassonne to Android.