Angela Guzman, in a Medium post:
This is the story of how an intern and her mentor designed Apple’s original emoji set and together changed the way people communicate around the world. It was also a project that led them to become lifelong friends, a key ingredient in the success of these tiny icons. In a nutshell, I was the intern and Raymond is my lifelong friend and mentor. In the course of three months, together we created some of the most widely used emoji: face with tears of joy, pile of poo, red heart, and party popper, plus around 460 additional ones. Later, as a full time Apple employee, I even got to create a few more.