I mostly do Android, nodejs+coffeescript backends/APIs/bots and (sometimes) angularjs landing pages, but I'm not afraid of any other technology.
I also had some episodes with: Dart, AngularDart, Objective-C, Ruby and Python.
I know a lot about Bitcoin (and other Cryptocurrencies), both from a technical and a user perspective.
In my projects I repeatedly use git, jade, SASS, koush/Ion networking library and gradle.
And here's my blog/website: http://meeDamian.com