As principal engineer at Sine Nomine Associates, I have been doing Linux on the mainframe since it was a skunkworks project within IBM.
I have authored several articles in publications such as Enterprise Technical Journal (and its predecessors) and have presented on z/VM and Linux around the world.
I am a maintainer of the CentOS-like distribution of Linux on z Systems (ClefOS), the Mono project (.Net on Linux), the SSH client suite for CMS, and the High Availability Option on Z.
I am a member of the Open Mainframe Project and Linux Foundation.