From Halopedia, the Halo wiki
Josh Holmes was an Executive Producer (and formerly Franchise Creative Director) at 343 Industries. Holmes worked as an Executive Producer at 343 Industries for Halo: Reach and Halo Waypoint. Before he joined 343, Holmes was the Vice President and General Manager of Propaganda Games, while working on the 2008 reboot of Turok. He worked on Halo 4 as the game's Creative Director. On November 18, 2016, Josh Holmes announced he would leave 343 Industries the following month to pursue independent game development. His role inside 343 would be replaced by Chris Lee.