When Instagram CEO Kevin Systrom met Karlie Kloss through friends in 2012, he had no idea who the supermodel was. He had launched his mobile photo-sharing app two years before, and he was a “typical tech guy,” he says, oblivious to culture. She was a jet-setting entrepreneur with an interest in coding. (They spent a morning making pancakes for friends; Systrom’s now wife, Nicole Schuetz, later filled him in.) Three years later, partially inspired by her friendship with Systrom, Kloss founded Kode With Klossy, which hosts a free camp where teenage girls learn the fundamentals of Ruby, JavaScript, HTML, CSS, and Swift. The pair got together to discuss the tech gender gap—from the top down and the ground up.
Apple or Android? “I have to have both, to be able…