Natasha is an all round events organiser for Novoda across London and Berlin. Running monthly android meetups and part of the team that bring Droidcon London together - she is an active member in the android community.
Benjamin works at Google to make #androidDev's life easier.
Before moving to London he organised the GDG Berlin Android community for about 4 years.
You can find out more about him on Google+.
cketti is a freelancing Android developer and open source enthusiast living in Berlin. He's one of the GDG Berlin Android leads and as such organizer of several developer events. Most importantly the monthly Android developer meetup Android Stammtisch and the conference series DevFest Berlin.
Friederike is a passionate Android developer, currently based in London working for Badoo, one of the largest social networks for meeting new people. Previously worked on a wide range of apps and games for Android.
Hasan Hosgel (alosdev)
Hasan Hoşgel is a dedicated Android developer with more then ten years of professional programming. Since 2010 also developing Android applications. Continuous improvement of the architecture and also quality are his interest. He is also co-organizer of the “GDG Berlin Android”. Now Working for Kitchen Stories and before that more then seven years for ImmobilienScout24.
As Android user from the beginning, I started to develop for the platform with version 1.6 in 2009. Since then I'm following its progress very enthusiastically and worked on several applications, big and small, successful in the Play Store and as specialized customer solutions. During these years, I 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 i'm a Android developer at the Hamburg based startup Jimdo.
Roland Wagner holds a professorship for geoinformatics with location based apps (LBA), spatial data infrastructures (SDI) and geoinformationsystems (GIS). He is also member in the jury in the large start-up contest "IKT-innovativ" offered by the Bundeswirtschaftsministerium (http://www.gruenderwettbewerb.de/ ). He joined the android community in 2008 with the organization of the Google Android Dev Lab with 300 participants. Roland Wagner is also a co-organizer of the "Wherecamp Berlin - Navigation Conference" ( www.wherecamp.de ). Prior his current position he worked for Fraunhofer in Berlin/Dortmund and Beijing.
Sebastian is working on the Chromecast Team at Google. In the past he has been one of the organizers of the Google Developer Group in Aachen, Germany and was a Google Developer Expert for Android.
Fun fact: He started developing for Android with the ADP-1 (ie. the first Android Smartphone ever) which he still owns today.
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.