Moin moin and hey there. Here is some information about some of my work, other stuff and contact info.
That's me on the picture, trying to look busy. Photo by Julian Raschke, at the first gosucon in dec 2010.

Public profiles:
My GitHub profile - where I do all my open source development
My XING profile - feel free to contact me about interesting job offers
Twitter - sorts of. I don't really use it/tweet that much, I mainly use it as some kind of news feed.
Interests:
libgosu 2D game development library for ruby/c++, powered by opengl. I contributed quite a few lines of code, too.
ogre flexible 3D engine, also powered by opengl
Ludum Dare, a 48 hour game development competition. (stuff I posted there)
Most of my free time I spend on OpenGL/Shader development, take a look at my bookshelf.
Work: (at least some of it)
Ambilight (C++/Qt) implemented on a Arduino
(video, the control panel, moodlight and an early test)
GTA2 World Viewer (C++/OpenGL), written from scratch.
(here are some screenshots)
Fast 2D Shadows (C++/OpenGL) for some Jump & Run (screenshot)
Memberships:
Active member of the Computer Science Student Council at the HS Karlsruhe.
I am also a member of the CCC e.V. and a founding member of the KoFfeIn e.V.
Contact:
Mail: mail[at]mathias-garbe.de
Jabber: mathias_@jabber.ccc.de
IRC: mathias_@freenode
(Yes, I have facebook and other social networking accounts. Just ask me, maybe I'll add you, but I'll probably won't unless I know you in real life.)