An engineer who builds everything:
Web, desktop, and browser extensions
I develop web systems professionally, and build desktop apps and browser extensions in my personal time.
I love seeing users happy with what I build. My motto is "be your own first customer" — I create products that I genuinely want to use myself.
With a background in both design and engineering, I have developed across the full spectrum: web, desktop, and browser extensions.
Extensive experience including responsive design and CSS animations. Strong in web design and coding, with many SPA projects built with Vue and React.
My go-to language for performance-focused development. My favorite framework is Gin. Used for the backends of SVG Calendar and dev-cabinet.
I build desktop apps with Tauri (Rust + Web). Used in Bokuchi, Micro Note, Lightning Timer, and more.
Used for scripting, server-side development, and data processing depending on the task. Languages I have been using more and more in recent years.
The language I have the longest experience with. My favorite framework is CakePHP. Used for many years in OSS development and B2B SaaS backends.
Comfortable with version control, containerization, and cloud infrastructure — from setting up development environments to running them in production.
Also skilled in design and video editing. I have always loved turning the images in my head into something real.
A vector-format calendar that stays sharp at any zoom level.
Supports Japanese public holidays, customizable colors, and strikethrough display for past dates.
Fully responsive design.
A service that showcases an engineer's skills like a video game status screen.
Provides a visually intuitive skill map.
Fully responsive design.
A service that automatically generates beautiful profile images from a simple form.
Freely customize background colors, text colors, and patterns, then download as SVG or PNG.
Includes automatic font sizing based on text length and auto-saving of your input.
A lightweight, high-performance, cross-platform Markdown editor.
A simple interface with features focused on Markdown editing.
Features a unique variable system, especially handy for writing operational manuals and procedures.
An app for saving short notes Twitter-style and pasting them anywhere.
A lightweight, easy-to-use note tool.
Cross-platform support.
A lightweight cross-platform timer application.
Built to time lightning talks at engineering events — its motto is "a timer you can't miss."
A notification app that keeps you from missing meetings and appointments.
Displays on-screen notifications so you never lose track of time, even during deep work.
All talks are in Japanese. English titles are provided for reference.
I publish technical articles on Qiita (in Japanese), covering personal development, PHP, OSS development, and more.
Working as an engineer since 2008.
Learned the fundamentals of system development, mainly through contract development. Experienced the full cycle from requirements definition to operations.
Engaged in developing B2B SaaS products. Spent about two of those years dedicated to OSS development, designing and operating a product used by people around the world.
For inquiries,
please reach out to me on X (formerly Twitter).