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Engineering in the open

Ryan Duffy

Site reliability engineer who builds AI infrastructure. A global network by day, a self-hosted AI platform by night — and the decisions written down along the way.

420 days building Rootweaver Since

Latest from the journal

The Rootweaver engineer checks the fit of a compact case in an instrument repair room.

Season 5, Episode 2

The Smaller Model Had to Earn Its Place

More context on the same GPU meant testing a smaller model, repairing its callers and recognising when the judge changed too.

Read the episode

Latest updates

1 website commit Website · WK·45

1 commit — Merge pull request #34 from rduffyuk/publish/s5e02-vw2170-20261105

Publication dates and public build notes. Journal entries describe earlier work. “Merged” does not confirm a live deployment.

The project behind the writing

Rootweaver

My independent AI engineering platform. Coding tools, persistent memory, searchable knowledge and code relationships, connected with signed provenance.

I design and operate it with AI-assisted development.