David Lee has made stops at top creative agencies including Sid Lee, AKQA, Wieden+Kennedy and TBWA/Worldwide. But arguably, he’s made his most significant imprint on the creative landscape with the string of standout ideas he has led as chief creative officer of Squarespace. Since he took the helm at the website building and hosting platform in 2013, it’s become famous for its entertaining and platform-spanning campaigns starring numerous celebrities including John McEnroe, Jeff Bridges, Idris Elba, Winona Ryder and John Malkovich (the latter earned an Emmy).