I'm a professional developer and enjoy writing stuff for linux environments (C/C++/bash/php console) but also on Windows (wx-widgets c++), Android (java) and microprocessors (ARM/AVR in C, C++ and sometimes ASM) I also have professional background in linux hardening, netfilter, proxies, exploit development and penetration "testing".
As hobby I worked on rfid with smartphones, build and program a quadcopter drone (AVR and ARM), custom lasers, an own stereolithography 3d printer, and other similar stuff.
I only like challenging tasks and solving them in an efficient way, only human stupidity bores me more than monotonous work.