Steve has been a DD since October 1996 and was Debian Project Leader from April 2008 to April 2010.
He maintains quite a few packages, but is normally most active doing DebianCd or DebianInstaller or UEFI work. He's also an admin for this wiki!
He's a member of the Community Team
For more details, see Steve's normal set of pages or his blog
Steve has a sandbox too.