Simon Willison’s Weblog

5th November 2017 - Link Blog

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

Notes on the xAI/Anthropic data center deal - 7th May 2026
Live blog: Code w/ Claude 2026 - 6th May 2026
Vibe coding and agentic engineering are getting closer than I'd like - 6th May 2026

This is a link post by Simon Willison, posted on 5th November 2017.

john-allspaw 2 careers 76

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe