Christopher Dufault will rejoin Random House on September 1 in the new position of senior director, international marketing & British Commonwealth sales, based in New York, reporting to Cyrus Kheradi. He was at Random House before moving to Simon & Schuster, where most recently he was director, international sales planning. At Little, Brown Children’s, Melanie Chang has been promoted to vp and executive director of publicity. Sara Zick will join the publicity department on September 1 in the new position of associate director. She was previously publicity manager at Penguin Children’s.