John Carmack (born August 20, 1970) is an American game programmer and the co-founder of id Software. Carmack was the lead programmer of the id Software video games Commander Keen, Wolfenstein 3D, DOOM, Quake, Rage and their sequels. Carmack is best known for his innovations in 3D graphics, and is also a rocketry enthusiast and the founder and lead engineer of Armadillo Aerospace. In August 2013, Carmack took the position of CTO at Oculus VR.
Description by Wikipedia