Mike Dussault or Mike D is a programmer. Between December 1994 and March 1996, he has worked at Zombie Studios on the 1995 video game Locus as senior programmer. Between 1996 and 2000 he worked at Monolith Productions, where he was the tech lead engineer on the Lithtech game engine. He has also been credited for a number of Monolith games, including The Operative: No One Lives Forever Since 2000 he has been working at Valve Corporation.