I now reside at Meta NYC, where I'm a Senior Engineering Director / Distinguished Engineer over in Instagram. My focus these days is on ML platforms (recommendation systems, in particular), scalable infrastructure, and developer tooling. (Emphasis on languages!) If any of that sounds interesting, hit me up: We're hiring.
If you want to talk compilers, language design or whatever, get in touch. (Though, please send any F#, TypeScript, or Swift bug reports or feature requests through the official channels.)