Juhani Lehtimaeki

@florianmski Sure. There's of course all the Android dev advocates who are very active there:
Nick: https://plus.google.com/u/0/118292708268361843293/posts
Roman: https://plus.google.com/u/0/113735310430199015092/posts
etc.

Then there are hundreds of Android devs who actively participate to discussions with tons of experience. They are too numerous to be listed here but here are few:
Paul Burke: https://plus.google.com/u/0/113406723988623654387/posts
Chris Banes: https://plus.google.com/u/0/103829716466878605055/posts
Wolfram Rittmeyer: https://plus.google.com/u/0/101948439228765005787/posts
Cyril Mottier: https://plus.google.com/u/0/118417777153109946393/posts
Al Sutton: https://plus.google.com/u/0/113331808607528811927/posts
Taylor Ling: https://plus.google.com/u/0/110199935346260350060/posts
Guenther Beyer: https://plus.google.com/u/0/109726284197282147930/posts
Chris Lacy: https://plus.google.com/u/0/104649936579980037256/posts

and many many more.

I'd definitely recommend following Android stuff on Google+ if you really want to be part of the discussion. There's a really active community and the discussion is very useful.

Thanks for the mention :)

Juhani