Izu-san

ENJA

Avatar of Izu-san, a long-haired character with horns and a maid-style headdress

Izu-san

A developer who enjoys AI-driven development, local LLMs and factory-automation games.

  1. AI-driven development

    Next token

    • AI-driven development0.46
    • Agent development0.27
    • Prompt design0.12
  2. Local LLMs

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    • Local LLMs0.51
    • Quantization0.22
    • Inference tuning0.11
  3. Factory-automation games

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    • Factorio0.44
    • Factory automation0.31
    • Belt design0.10

I work as a test automation engineer, and in my personal projects I try out AI-driven development and local LLMs. I track the work as YouTrack tickets and build it together with AI agents. I am also interested in factory-automation games such as Factorio.

Status

NOW RUNNING
Launched this site.
IDLE
The E2E estimation proof of concept is paused after writing up its results.
NEXT
More content updates to come.

Last updated:

Projects

  • izu-san.com (this site)(opens in a new tab)

    A portfolio site built with AI agents, with its spec and tickets managed in YouTrack. A static Astro site served from S3 and CloudFront, with the AWS setup also managed as CDK code.

    Tech:

    • Astro
    • TypeScript
    • AWS CDK
    • YouTrack
    • GitHub Actions

  • E2E Automation Estimation Lab(opens in a new tab)

    A proof of concept that estimates the effort of E2E test automation with AI and Python tools. AI reads the test specification and makes judgments; Python counts, calculates and cross-checks. No business data is used.

    Tech:

    • Python
    • Claude Code
    • Playwright

  • MaidAI — Read more

    A desktop client that keeps a conversational AI character, Rino, running on a local LLM. It connects chat, voice and daily-life notifications, and routes actions through approval and audit. Built for personal use, so there is no public repository.

    Tech:

    • Python
    • Electron
    • ローカル LLM

  • Home server operations — Read more

    Runs GitLab, YouTrack, Zulip and other services on my home server. The Compose files are kept in Git and checked in CI. There is no public repository.

    Tech:

    • Docker Compose
    • GitLab
    • YouTrack
    • Linux

Skills

AI and LLMs

Claude Code
Implementation, spec writing and review in personal projects, worked on with AI agents from YouTrack tickets.
ローカル LLM
Run on my own PC for the conversational AI Rino and a horse-racing prediction experiment.

Programming languages

Java
HDD/SSD performance tests and QA tests that drive the storage CLI.
Python
Tests for the management REST API, and the tooling in the E2E estimation experiment.
TypeScript
E2E tests for web systems, and the implementation of this site.
C#
E2E tests for desktop apps.

Test automation

Playwright
E2E tests for web systems.
Selenium
E2E tests for web systems.
Appium
E2E tests for smartphone apps.
Robot Framework
Writing web tests on top of Selenium, and REST API tests.

Web development

Astro
Generates this site as a static site.

Infrastructure and operations

AWS CDK
Manages the S3, CloudFront and ACM setup as code.
GitHub Actions
Verifies and publishes this site.
Docker
Runs GitLab and YouTrack with Compose on my home server.

Career

Quality assurance for storage products

–

Tested the embedded firmware and the hardware of the products. Automated HDD/SSD performance tests, QA tests that drive the storage CLI, and tests for the management REST API.

E2E test automation and AI adoption

– present

Automating E2E tests for web systems, smartphone apps and desktop apps, and promoting the use of AI.

Contact

Designed by
Izu-san
Checked by
You
Approved by
Pending

Feel free to get in touch