Tech firms slash jobs to embed AI; Tony Xu of DoorDash in the spotlight as cofounder/CEO with recent moves in product and tech strategy. Born in Nanjing, immigrated to the U.S. at five. #DoorDash #AI (Note: If character count exceeds 140, trim: "Tech firms cut jobs to embed AI; Tony Xu of DoorDash in the spotlight as cofounder/CEO. Born in Nanjing, immigrated to the U.S. at five.")