I've been using Unix, mainly Solaris for over 15 years. While Solaris was open I tried to be part of the community with this blog and by filing bugs and debugging.
During the days I work with standardization and implementation of the Unix platform at a large company. This involves design and implementation of Solaris and everything around it including security, performance, storage, virtualization and development.
I also work as a consultant part time and can be contacted at henrik (at) gigamega.se.