I am an Android developer since I got my first Android device, the Motorola Milestone (yeay for hardware keyboards!). Since then I have developed multiple apps with 1 million + downloads. Aside from giving talks at various Android related tech events, I am also a GDG (Google Developer Group) lead.
All editions of Droidcon Italy
DevFest Istanbul, Vienna, Konstanz, Hamburg, Madrid, …
Android Developer Days Ankara
and many others