You can go to his about page. https://plus.google.com/u/0/115984868678744352358/about "I work at Google as a Webmaster Trends Analyst. This is my personal profile.

What do I do at Google? I help webmasters build better websites, so you'll see me talking to webmasters on our and other forums, writing blog posts, saying things like "I'll ask internally" and the like."