Mr. Warren Shaeffer serves as Vice President at Medium (Social/Platform Software). Mr. Warren Shaeffer is a Co-Founder and serves as Chief Executive Officer at Knowable. Previously, he co-founded and served as Chief Executive Officer at Vidme. He is an Angel Investor. He served as the Chief Operating Officer at SocialEngine. He cofounded and served as Chief Executive Officer at Digital Objects. He was an Entrepreneur-in-Residence at MuckerLab, an investment associate at Golden Gate Capital and an investment banking analyst at JPMorgan. He holds a BA (Bachelor of Arts) degree from Harvard.