Backend engineer by trade 🐍 based in Tokyo, building AI-native software systems. About ten years of making things that stay up — mostly inside companies that keep their code private, so this page only shows the solo stuff.

• Tokyo Mogu Mogu — a mobile-first app for discovering Tokyo's regional food culture through open data. Current milestone: a deterministic hackathon demo for August 2026.
• Chabiko — Traditional-Chinese for Japanese speakers preparing for a Taiwan trip. Live at chabiko.pages.dev.
• tachi-lens — a bring-your-own-key Chrome extension for immersive Twitch chat translation.

I'm a DX-driven, tooling-minimalist, automation-first developer.

I prefer fast, opinionated tools with strong defaults, deterministic behavior, minimal configuration, and as little overlap as possible. If one well-designed tool can replace several fragmented layers without sacrificing correctness, I usually prefer the simpler toolchain.

Current defaults:

• Python: uv for environments, dependencies, and commands; Ruff for linting and formatting.
• JavaScript / TypeScript: TypeScript-first; pnpm is the default package manager. I avoid npm and yarn for project workflows.
• Bun: actively evaluating it, but it is not a default yet.
• Git / CI: Git-native workflows, reproducible builds, static checks, tests, and automated validation by default.
• Tooling: prefer fewer, faster, composable tools over overlapping stacks and configuration-heavy workflows.

AI is a collaborator, not a code generator. GitHub is the coordination layer between me and coding agents:

Product / architecture decision → implementation-ready Issue → implementation → tests → Pull Request → independent review → merge

Historically Python: Flask, SQLAlchemy, PostgreSQL, Docker, Nginx, GCP. Solo builds start frontend-first — the cheapest way to learn if anyone actually wants the thing before I invest in a backend.

Into Japanese space missions (はやぶさ 遥かなる帰還 is a favorite), the historical drama 龍馬傳, and Ghost in the Shell — which probably explains the AI-agent stuff.

• Based in Tokyo
• Studying Japanese
• Leaning into data engineering, software architecture, and the AI-agent development loop