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chibiham/ developer & explorer

Build.Learn.Make it better.

Keep exploring
what’s better.

Illustrated portrait of Chibiham

ABOUT CHIBIHAM — 35.44°N 139.64°E

A freelance developer based in Yokohama, Japan.

I've developed web applications since 2016 and worked independently since 2023.
My experience spans front-end, back-end, and infrastructure, from design to implementation and operations.

How I workMy background

FIG.02HOW I WORK

Design to keep
responding to change.

Experience and strengths

Assumptions shift. What we need changes.
I value the agility to keep moving, learning and revisiting decisions along the way.

PRINCIPLE 01

Keep asking what better means.

Better for whom, and in what way? I revisit problems and assumptions, using people’s experiences and real feedback to clarify what we should aim for.

PRINCIPLE 02

Try, check, and revise.

I turn hypotheses into working software and learn from the response. Moving between design and implementation, I update decisions and use what I learn to improve the next iteration.

PRINCIPLE 03

Build structures that can adapt.

I think about boundaries that make the effects of change clear, and checks that let us make changes with confidence. I record the reasons behind decisions so the product and team can keep moving.

FIG.03WORKS / SPECIMENS

Things I'm building

All projects
SD Tag Builder

SD Tag Builder

A tool for picking Stable Diffusion tags from sample images and generating consistent, numbered prompt series from templates and slots. Features seed-reproducible generation, 1,179 sample images rendered on a home ComfyUI server, fully local storage with IndexedDB, and zero-cost hosting as static assets on Cloudflare Workers.

No.
01
DATE
2026.09
STACK
next.js · cloudflare-workers · indexeddb
Chiseizu (Knowledge Star Map)

ChiseizuKnowledge Star Map

An interactive star-map site that connects technical vocabulary through the genealogy of "why it was born." Features a d3-force Canvas star map, Content-as-Code with MDX + Zod, 40+ interactive learning components, and zero-cost operation on Cloudflare Workers.

No.
02
DATE
2026.07
STACK
astro · react · d3-force

FIG.04JOURNAL / OBSERVATION LOG

Thoughts and experiments

All articles

Notes on the questions I encounter while designing and developing software.

  1. OBS.019
    Making a Dance Animation with Image Generation AIai
  2. OBS.018
    Running Qwen3.8-27B on a Mac mini and an RTX 3090ai
  3. OBS.017
    Architecture Patterns for Building Gateways with Envoy Proxyenvoy
I also write about technology on Zenn

FIG.05CONTACT

Work requests
& inquiries

For work requests or inquiries about my independent apps and services.
Please include the details in the contact form.

Contact me