Kelvin Doe (born 26 October 1996), also known as DJ Focus, is an African engineer. He is known for teaching himself engineering at the age of 13 and building his own radio station in Sierra Leone, where he plays music and broadcasts news under the name "DJ Focus". He was one of the finalists in GMin's Innovate Salone idea competition, in which Doe built a generator from scrap metals. As a result of his accomplishment, he received an invitation to the US and subsequently became the youngest person to participate in the "Visiting Practitioner's Program" at MIT. His accomplishments were documented by @radical.media and presented on their corporate YouTube channel. When the video went viral, the story was picked up by CNN, NBC News, and The Huffington Post.