Luismi Cavallé works at BeBanjo. He's been putting together lines of Ruby code for fun and profit since 2006. He's an active open-source contributor and got his 15 minutes of fame a couple of years back as the author of Steak (later revealed as a scam). He's been involved with the Ruby community in Spain organising and speaking at local conferences and leading the Madrid Ruby users group. He lives now in London.
More about Luismi: