Christopher Arthur Lattner (born 1978) is an American software engineer, former Google and Tesla employee and co-founder of LLVM, Clang compiler, MLIR compiler infrastructure and the Swift programming language. As of 2022, he is the co-founder and CEO at Modular AI, an artificial intelligence platform for developers. Before founding Modular AI, he worked as the President of Platform Engineering, SiFive after two years at Google Brain. Prior to that, he briefly served as Vice President of Autopilot Software at Tesla, Inc. and worked at Apple Inc. as Senior Director of the Developer Tools department, leading the Xcode, Instruments, and compiler teams.