I’m delighted to announce that Simon Lu is joining YC. He will focus on our investment activities and advise YC alumni companies.

Simon joins with both operational and investment experience. He joined Twitter in 2010 and held various roles during his five years with the company in business development, corporate strategy, platform operations, and corporate development. Prior to Twitter, he was at The Carlyle Group, where he focused on technology and education investments.

I mentioned to a few people today that Simon was joining us; the response in all cases was “Wow, he’s one of the best people I’ve ever worked with.”

Welcome, Simon!