CERN
3 former staff tracked on the wiki, 2 of whom now run something.
Worked here, then
3 listed
Mattias GenbruggeTechnical Student · Nov 2007 – Jul 2008Chief Operating Officer, Antwerp Space
Xavier RoubyCMS L3 Coordinator · Sep 2007 – Jun 2008Founder & CEO, Opal Solutions
Tom Van SteenkisteOpenlab summer student intern · Jun 2015 – Aug 2015CTO, CLOUDS OF CARE