Michael Sayman, He is best known for creating one of the fastest growing mobile game apps built by a teenager, 4 Snaps, which is a turn-based photo game, developed in his junior year of high school in 2013. At his age of 17 he was a intern at Facebook, At his age of 18 he was a Product Manager at Facebook Now at age of 21, he is a youngest product manager at Google for Assistant , a voice-based service built on the search engine’s giant database Assistant is a top priority for Google chief executive officer (CEO) Sundar Pichai.