~/calvin/writing $ ls -la

Writing

Short notes on distributed systems, payments infrastructure, and the day-to-day of shipping software at scale.

• 2026-05-19 · 14 min read

  Running Qwen 3.6 locally because I kept running out of Claude Code

  A field note on standing up a local LLM as a second-tier coding assistant, and an honest comparison with Claude Code.

• 2026-05-06 · 15 min read

  A field note from shipping Don't Touch Red

  What it was like to ship a small Android game with Claude Code, plus the two skills I open-sourced along the way.

• 2026-04-07 · 2 min read

  Hello, world

  A short note on what this site is and what I'm going to put here.