I lead the Content Security team for Mozilla. I'm based out of Melbourne, Australia.
Paul has been working on mobile security for both FirefoxOS and Fennec for several years and he also is the manager of the FirefoxOS Security team.
Paul is the head of Firefox OS security and an excellent conference speaker on security topics.
I have worked with Paul since his first week at Mozilla (literally iirc, he started during our team meeting in 2012).
Since then he has been driving security on Firefox OS, and leading some cool projects like scanjs.
An automatic vouch for being a Mozilla employee.