@siggi

Building @buildbuddy (YC W20), ex-Googler

 California
buildbuddy.io
Joined April 2007
  • Tweets836
  • Following1.4K
  • Followers2.6K
98Media
over the past few weeks, we leaked thousands of API keys across the NYC subway! please don't try this at home.
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This is so inevitable at a certain scale. Rerun of the Google/Facebook playbook. I estimate the CI system is a harder problem to solve at scale: distributed computation with common failure expected. I wonder if they use bazel and, e.g., @buildbuddy
Anthropic
@AnthropicAIOct 13
New on our Engineering blog: Creating in-house source control. In May, we merged around 2,500 code changes per day. In September, we merged more than 30,000 per day. As a result, we became bottlenecked by developer infrastructure built for human (rather than agent) scale. Here, we share how we built a new version control system—and fully migrated our monorepo from git—in five months: anthropic.com/engineering/re…

Redesigning source control at Anthropic

As our merges per day grew more than tenfold, source control became our biggest development bottleneck. Here, we share how we migrated to an in-house version control system in five months.

anthropic.com
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CI spend is greater than spend on tokens now. Heard this repeatedly from portfolio companies. It’s now one of the biggest markets in the developer stack.
Brennan McEachran 👨‍🚀
@i_am_brennanOct 10
October is the first month I think I might spend more on CI than AI. Time to make changes somewhere… Recommendations?
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Son Luong
@sluongngOct 8
Oh hey it's @bazelbuild 🤝 @buildbuddy 🤝 @buildkite Stronk @Reddit !
Buildkite
@buildkiteOct 7
EXTRA! EXTRA! READ ALL ABOUT IT! The Morning Build, Vol. 1 is out. A real, printed newspaper, hot off the press and on the streets of SF this week. Didn't snag a copy? better.ci/vol-1 #SFTechWeek

The Morning Build — Vol. I

You deserve better CI. The SF Tech Week edition of The Morning Build: engineering war stories, field notes, classifieds, and horoscopes. Obviously, from Buildkite.

better.ci
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Your agents want to work in a mono repo.
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If you're going to Bazelcon this year in Amsterdam, BuildBuddy is co-hosting a happy hour with Google Cloud. We'd love to see you there! Save your spot: bazelcon.buildbuddy.io
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Bazel@bazelbuildOct 5
Big thanks to @buildbuddy for returning as a Platinum sponsor of BazelCon 2026, and for hosting Happy Hour with Google Cloud after day 1! Join us Wednesday, October 14 at 6:30pm! Save your spot: bazelcon.buildbuddy.io
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Don’t die a startup!
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Power of Bazel: I touched a header that has the convolution implementation. Bazel rebuilt and reran only the tests that use convolution (took it 7s), greatly saving the time.
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Boy oh boy is CI holding us back. Looking intensely at Bazel and BuildBuddy.
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Replying to @buildbuddy
@buildbuddy is amazing. Saved 23,000 actions minutes so far. CI is still at a P90 of 5m and we've climbed past 15 production services and 1m lines of code @PerimeterCmpute
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Great reason to use @bazelbuild and @buildbuddy! Remote caching and remote execution are the answer to this explosion in test runs & CI usage - we're seeing it across all of our customers. Never do the same work twice!
Addy Osmani
@addyosmaniSep 14
At Anthropic, Claude now writes 80% of our code. Engineers ship 8x more code per quarter. Side effect: Tests grew 10x. CI jobs up 25x in 6 months. Here's what helped us scale: claude.com/blog/agentic-codi…
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Codex CLI can now be built for Windows MSVC runtime fully hermetically in remote executors. This was the final validation pass for the MSVC support in hermetic-llvm project. Powered by @hermeticbuild and @buildbuddy Invocation URL: app.buildbuddy.io/invocation…
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This process is so heavy that it would be simply impracticable to do in normal circumstances. This is made possible thanks to Remote Builds distributed on thousands of cores using @buildbuddy. It's done as part of the same graph as the final target. This is madness...
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Son Luong
@sluongngAug 15
Heir is powered by @bazelbuild and @buildbuddy 🥰
👩‍💻 Paige Bailey
@DynamicWebPaigeAug 15
"you can't do math on encrypted data" ring homomorphisms: ...and I took that personally. homomorphic encryption is some of the most "but *how*?!" math I know: a server does inference on your data while it's still encrypted, then computes a (correct!) answer it cannot read, to a question it cannot see @Google and @jeremyjkun just open-sourced a compiler for it 🧵
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Son Luong
@sluongngAug 10
You know what is worth 625k annually?
You’re unable to view this Post because this account owner limits who can view their Posts. Learn more
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RBE via @buildbuddy is bliss
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BuildBuddy is literally magic. If I ran the stuff it gets done in minutes on my laptop, it would explode.
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tyler hogge
@thoggeJun 8
Customers kingmake startups. Not VCs.
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Steeve Morin
@steeveJun 1
Bazel is a superpower
Eugene Ostroukhov
@eeuossMay 31
Bazel is seriously underappreciated. Clone of Google’s internal Blaze, it’s cross-language, battle-tested, and extensible. Decades of Google engineering expertise. My favorite part: aggressive caching. I run all tests; it reruns only what changed, tracked by hashes. I’ve never seen it miss a change. 2.5s rebuild + test.
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