Creator of CLiki, ASDF, ASDF-INSTALL, and one of the SBCL developers, amongst other things.
A director of LispWorks Ltd.
SBCL and McCLIM developer.
Sean Ross used to live in Johannesburg, South Africa but recently moved to London where he works in Ruby and Java to pay for playing with CL. I can be contacted at sross <at> common-lisp <dot> net