Kleiner Perkins today announced that Mamoon Hamid will be joining the firm as a general partner and managing member. Hamid has a proven track record of investing in many of the leading enterprise startups of the last decade – including early investments in Slack, Box, Yammer, Intercom and Netskope, where he also served on the board of directors. Hamid spent the last six years as the co-founder of Social Capital, where he led the firm’s venture practice. Before that, he was a partner at USVP.