Mobile interfaces
Clear controls, resilient states, no hidden detours.
00 / IDENTITY
Yrei.
Independent developer building self-hosted systems, mobile tools, and a more personal web.
Now Exploring self-hosted infrastructure and thoughtful mobile interfaces.
- Focus
- Useful systems
- Mode
- Independent
01 / THE NAME
A name made to travel.
Origin
Yūrei
幽霊 / spirit
Distilled
Yrei
four letters
Home
yrei.dev
one identity
A little mysterious. A little playful. Entirely mine.
Yrei is a compact digital identity distilled from yūrei, the Japanese word for spirit. It carries forward my longtime nickname, 鬼鬼Sama, without turning it into a costume.
Removing the u leaves four letters that move easily between languages, source code, and the open web. It is less a conventional English name than a durable signature.
- Said as
- Y-ray
- Handle
- @yreidev
- Domain
- yrei.dev
02 / PRACTICE
The work between layers.
I work across the connection between interface and infrastructure: designing the screen, tracing the request, and keeping deployment understandable.
Useful by default
Infrastructure
Observable decisions, recoverable changes, documented edges.
Self-hosted software
Portable data, direct connections, ownership that survives a move.
The open web
One durable identity across domains, code, and communities.
FlutterGoTypeScriptCloudflare
03 / PRINCIPLES
A quiet operating system.
-
01
Own the important parts.
I choose portable formats, direct connections, and systems I can move without asking permission.
-
02
Show the consequential choices.
I hide routine machinery, not decisions about data, security, cost, or control.
-
03
Stay after release.
I treat maintenance, migration paths, and honest constraints as part of the product.
04 / CONTACT
Say hello.
For open-source work, thoughtful collaborations, or a good technical conversation.