Rad and Mateen have provided company a few ideas with each other for a long time Both 27 in December, I flew out to Los Angeles, where Tinder is based, to visit the company’s offices and meet two of its founders, Sean Rad and Justin Mateen. (the next is Jonathan Badeen, the engineer whom built the app. ) Rad may be the chief ecutive officer; Mateen is main advertising officer. They’re also best friends, share a resemblance to David Schwimmer,…