I am Takayuki Maeda (TaKO8Ki), a Rust compiler team member and open-source maintainer based in Kyoto, Japan. I work as a Staff Software Engineer at Money Forward, while most of my open-source work focuses on compilers and developer tools written in Rust.
Rust compiler
I have contributed to the Rust compiler project since 2021. My work includes more than 500 commits, over 200 reviewed pull requests, new language features, error diagnostics, type-system refactoring, and fixes for hundreds of Internal Compiler Errors.
Current work includes open namespace support and ergonomic reference-counting features. I also serve on the Compiler FCP team, signing off on major compiler changes.
From 2023 to 2024, I was a Rust Foundation Fellow, focused on rustc diagnostics infrastructure, compiler bugs, and const features.
Open-source projects
I maintain RTK (Rust Token Killer), an open-source Rust CLI that reduces coding-agent shell output by 60–90% across more than 100 supported commands, with under 10 ms of overhead. My work includes pipeline-safe command rewriting that preserves upstream behavior, streaming standard-input support, and permission-decision tests.
Other projects include gobang, a cross-platform TUI database management tool; awesome-alternatives-in-rust, a curated list of Rust alternatives to existing software; and frum, a Ruby version manager written in Rust.