John Yoon

Builder notes, public tools, and mission-oriented software.

AI engineering, research workflows, and ministry technology shown through public work instead of a static bio.

John Yoon

Substack & GitHub

Latest visible output

Built daily from public GitHub metadata and Substack RSS.

Substack Writing

Public essays

Longer-form public writing will appear here when Substack RSS returns published posts.
GitHub JavaScript

turabian-md

Convert academic Markdown papers into Turabian-style DOCX files.
GitHub Python

idle-maintenance

A macOS maintenance suggestion system that prompts users with actionable tasks during idle time
GitHub Go

symlink-logger

FUSE-backed CLI for safely retiring directory symlinks by logging compatibility-path access.
GitHub Python

aicommit-split

Deterministically split working-tree changes into semantic commit groups before running aicommit.

Activity

Public conversations

Official platform embeds, with no private API tokens.

Selected Work

Tools worth inspecting

Go / systems

symlink-logger

FUSE-backed CLI for safely retiring directory symlinks by logging compatibility-path access.

 Developer tools

aicommit-split

Deterministically split working-tree changes into semantic commit groups before running aicommit.

 Research workflows

research-workbench

CLI tools for organizing research projects, sources, and Readwise workflows.

 Local-first automation

activitywatch-calendar-export

Export ActivityWatch timelines to Obsidian summaries and calendar feeds.

CV

AI engineering, ministry formation, and product building

Senior AI/ML engineering GenAI orchestration M.Div. candidate 3 U.S. patents Founder

Engineering

  • Senior Lead ML Engineer at Capital One; hallucination detection and AI guardrails.
  • Senior ML Engineer at Intuit; GenAI orchestration, expert matching, and production ML.
  • Member of Technical Staff at Nutanix; automation and release infrastructure.

Mission & Research

  • M.Div. candidate at Southwestern Baptist Theological Seminary, expected 2026.
  • Researching AI-assisted formation tools for missionaries and cross-cultural ministry.
  • Founder of Wikicourse, a collaborative lecture and learning platform.