About

I’m Boris and this is my blog.

I am a Software Engineer at Anthropic, where I created Claude Code. Before that I was at Instagram, where I prototyped and scaled the next big ideas for product & infra. A few years ago I wrote a book: O’Reilly’s Programming TypeScript. I live in San Francisco. In my free time you can find me reading, running, and salting things.

Find me on Threads, X, Github, and LinkedIn, or get in touch at boris at this domain dot com.