I am a software engineer and founder of Laicos, based in Osaka, Japan.
I build web applications and developer tools with Ruby on Rails and Elixir. I enjoy working in small teams, designing maintainable systems, and turning real-world problems into simple software.
I build and maintain open-source projects across web development and developer tooling:
- any_login — A development-only account switcher for Phoenix applications.
- url_validator — An Ecto changeset validator for HTTP and HTTPS URLs.
- time_validator — Ecto changeset validations for values in the past or future.
- jp_prefecture — An Elixir library for searching Japanese prefecture data.
- github_time_converter — A Chrome extension that converts GitHub timestamps into absolute time.
- google-safesearch-enforcer — A Chromium extension that forces SafeSearch on Google Search.
- nvim — My Neovim configuration and development environment.
- HulkinPublic — Videos about software development, technology, and building products.
Ruby on Rails · Elixir · Phoenix · Ecto · TypeScript · React · Vue · Svelte · Rust · Node.js · Flutter · PostgreSQL · GCP · Heroku · Railway
I started programming as a student and later worked through long-term internships before becoming an independent engineer. After moving to Osaka, I founded Laicos.
For collaboration, software development, or open-source projects: