Simon Willison’s Weblog

On Being A Senior Engineer. Thoughts on characteristics of a mature engineer from John Allspaw back in 2012. So much good thinking in here—my favourite piece of writing on the subject.

Posted 5th November 2017 at 6:16 am

Recent articles

How Rob Pike got spammed with an AI slop "act of kindness" - 26th December 2025
A new way to extract detailed transcripts from Claude Code - 25th December 2025
Cooking with Claude - 23rd December 2025

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