Frontend / Full-stack Engineer based in Tokyo.
I build maintainable TypeScript applications, developer tools, and business web systems.

I am a frontend / full-stack engineer working in Japan, focused on TypeScript, Vue, React, and API-driven web applications.

My current interests are:

• Type-safe frontend architecture
• Business web applications and internal tools
• Developer experience and automation
• Practical tools for engineers living and working in Japan
• Long-term personal engineering systems

Frontend
TypeScript · Vue · React · Nuxt · Next.js · Vite

Engineering
REST API · OpenAPI · Zod · Testing · GitHub Actions · CI/CD

Product Areas
Business systems · Developer tools · Japan-focused web applications

A TypeScript-powered personal engineering atlas that connects my projects, skills, learning logs, resume materials, and portfolio website.

A warm-toned VS Code color theme designed for comfortable long coding sessions, with dark and light variants and accessibility-aware contrast.

A Japan-focused API toolkit for foreign programmers living in Japan, including daily coding challenge data, exchange rates, weather information, and daily-life utilities.

A Vue 3 configuration editor and drag-and-drop tool for building structured, interactive configuration workflows.

• Building TypeFusion Atlas, a TypeScript-powered portfolio and project knowledge system
• Improving Japan-focused developer tools
• Strengthening my TypeScript, frontend architecture, testing, and automation skills

I am working toward product-oriented engineering roles in Japan, especially frontend / full-stack positions where TypeScript, maintainability, API integration, and cross-functional collaboration matter.

• GitHub: TypeFusion
• Location: Tokyo, Japan