Matthieu Riou has been consultant, freelancer, developer, and engineer for a wide variety of companies. He's also a Vice President at the Apache Software Foundation and has founded several open source projects. His technological expertise is centered on Java and Ruby, with a strong Web Services tint. He's now a senior software engineer for Intalio Inc where he works on Apache ODE and Intalio|BPMS among several other things.
He writes regularly at his blog.