I'm Justin.
This site will be a collection of notes, write-ups, projects, thought out posts, garbage, and occassional breakthroughs. Mostly about data.
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Dec 30, 2025
Terminal Agents Just Got Scary Good
Rambling about gpt-5.2-codex and Opus 4.5 and some twitter posts
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Dec 22, 2025
Devcontainers
Experimenting with devcontainers for Codex and day-to-day development
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Oct 10, 2025
Building a new feature entirely on my phone with Codex
How I added post tags for this website using only my phone, OpenAI's Codex, and GitHub Mobile
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Sep 08, 2025
Fluent Python notes part 3 (chapter 11)
Consolidated notes from Fluent Python part 3 covering chapter 11
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Sep 05, 2025
Modern Python packaging with uv
A meetup talk
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Sep 01, 2025
Fluent Python notes part 2 (chapters 7-10)
Consolidated notes from Fluent Python part 2 covering chapters 7 through 10
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Aug 17, 2025
Fluent Python notes part 1 (chapters 1-6)
Consolidated notes from Fluent Python part 1 covering chapters 1 through 6
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Dec 05, 2024
Simplifying Python development with uv
A meetup talk
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May 02, 2024
Accelerating Python data analysis with DuckDB
A meetup talk
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Mar 24, 2024
1 billion row challenge in Python
Processing 1 billion rows with various Python packages