As a freelancer I have been working on many Android projects. I'm actively blogging on http://www.grokkingandroid.com and very active within the Android community on Google+. I'm giving talks about Android related topics regularly and occasionally provide trainings to new Android developers.
Before working on Android I have been working as a permanent employee on Java EE and Java projects for fifteen years.
My contributions to GlassFish which led to me being approved as a committer for GlassFish.
I have been working with Java for 15 years. During this time I worked in many projects for different clients and topics.
Lately I have been working more and more on Android projects.