Bharat joined Microsoft on a mysterious day between the end of March and beginning of April 2008. He's a Senior Technical Writer in the Exchange Customer Experience (CXP) team, responsible for content related to Compliance, Security, and Search.
Before joining Microsoft, he worked as Principal Exchange Architect. He has held various positions at half a dozen Silicon Valley startups before that- doing mostly Exchange, Windows platform and security-related stuff.
Bharat is a former Exchange MVP, current MCT, MCSE (+Messaging +Security), MCITP.
He is the coauthor of Exchange Server 2007: The Complete Reference (Osborne McGraw-Hill), and publishes Exchangepedia blog.