C++ lead and compiler engineer on Apple's clang team.

Former compiler engineer on WebKit's JavaScriptCore.

Former compiler engineer on Google Chrome, contributing to WebAssembly, LLVM, PNaCl, V8.

I make things fast by tuning assembly, SIMD, concurrency, and teach the compiler to do the same. I'm actively involved in the C++ standard committee's concurrency and parallelism group WG21/SG1, on WebAssembly, and JavaScript.