Alberto Castelo
1.3K posts

Alberto Castelo
@acaste10
Staff ML Engineer @Shopify. Working on Agents

Had a great conversation with @swyx on @latentspacepod about what we're building at @Shopify. SimGym, Tangent, our approach to PR review at 30% month-on-month merge growth and why larger models are cheaper in long run. Swyx asks good questions! youtube.com/watch?v=RrkGoX…

OK @eastdakota real talk: why doesn't Cloudflare buy La Liga. It's 8% of Cloudflare's market cap. Then you can: 1. Stream La Liga, globally, as a massive subscription business, using your edge network, better than it's ever been streamed 2. Liberate Spain Kidding not kidding

I know quite a few people were affected by the Cloudflare blocking SimGym - sorry about that, should all be resolved now. Getting ready to ship a few cool things - hopefully, Monday!

Sidekick responses got so much better yesterday. s/o to @alxclrk for sweating all the details on this one.

Insights that were once out of reach for smaller merchants are now available, fast. Full deep dive → shopify.engineering/simgym #GTC2026

OK, well. I ran /autoresearch on the the liquid codebase. 53% faster combined parse+render time, 61% fewer object allocations. This is probably somewhat overfit, but there are absolutely amazing ideas in this.















