I'm Hiroki.

I’m a software engineer specializing in JavaScript & TypeScript.

I have a passion for helping engineers be more productive by improving Developer Experience (DX).

My DX projects are open-source and available for anyone to use. Last month, they were downloaded 100.3 million times (that’s ~39 downloads a second!).

I’m currently based in 🗼 Tokyo and work at Square as a frontend engineer.