Chris Lattner (born 1978) is an American software engineer best known as the main author of LLVM and related projects such as the Clang compiler and the Swift programming language. As of January 21, 2022, he is the CEO at Modular AI, a artificial intelligence company he co-founded. Before founding Modular AI, he was working at SiFive as Senior Vice President of Platform Engineering, 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.