I started doing Android development 5 years ago and in MOBGEN almost 2, so now I work professionally as a Senior Android Dev. I don't have so much experience in conference talks, the first one was in the Big Android BBQ (Amsterdam) half a year ago, but I do really enjoy the time doing them. I also give some small talks at the office to my colleges so we can share the knowledge. I am currently working on an SDK for an internal product, and the whole sdk has to work offline, that is the reason why I spent more than 5 months testing different approaches to get it done in terms of performance, usability and decoupling between layers. I also have one app in the store done in my free time.