Sean McCullough
@banksean.bsky.social
software engineer, xoogler
🎱 pool junkie
live music appreciator
TX ex-pat, based in SF bay area
he/him
🎱 pool junkie
live music appreciator
TX ex-pat, based in SF bay area
he/him
RFK, Jr.: The Undead Kennedy
October 23, 2025 at 5:50 PM
RFK, Jr.: The Undead Kennedy
There should be a standard keyboard shortcut for "Undo whatever dumb shit the AI just did."
October 5, 2025 at 12:19 AM
There should be a standard keyboard shortcut for "Undo whatever dumb shit the AI just did."
"A lab-what, now? Lab... booboo...? I don't get it. Is it a Wuhan reference?"
September 27, 2025 at 12:35 AM
"A lab-what, now? Lab... booboo...? I don't get it. Is it a Wuhan reference?"
Reposted by Sean McCullough
i'm at the civil war
i'm at the great depression
i'm at the combination civil war great depression
i'm at the great depression
i'm at the combination civil war great depression
September 2, 2025 at 10:32 PM
i'm at the civil war
i'm at the great depression
i'm at the combination civil war great depression
i'm at the great depression
i'm at the combination civil war great depression
Trying to learn how to write code by looking at source file contents is like trying to learn how to ride a bike by looking at photos of cyclists crossing a finish line. Your shell, debugger, IDE etc, all handle time-ordered events that explain things that can't be inferred from your commits alone.
August 14, 2025 at 6:24 PM
Trying to learn how to write code by looking at source file contents is like trying to learn how to ride a bike by looking at photos of cyclists crossing a finish line. Your shell, debugger, IDE etc, all handle time-ordered events that explain things that can't be inferred from your commits alone.
Many (most?) major headaches in software engineering are a function of code change velocity. Prod outages, merge conflicts, code review latency, team communication and coordination problems etc - these only get worse, if you turn up the commit rate without making other changes to how you work.
One of the biggest issues in the open source model of software production is that the velocity and quantity are often too high for proper code review. And now we are raising the velocity and quantity through automation.
An example of agent-assisted-programming going wrong: sketch.dev/blog/our-fir...
July 31, 2025 at 10:37 PM
Many (most?) major headaches in software engineering are a function of code change velocity. Prod outages, merge conflicts, code review latency, team communication and coordination problems etc - these only get worse, if you turn up the commit rate without making other changes to how you work.
Reposted by Sean McCullough
if the democrats wanted to save america they'd be working on Project 42069
June 30, 2025 at 6:49 PM
if the democrats wanted to save america they'd be working on Project 42069
github actions pricing is the printer ink of compute
June 24, 2025 at 10:59 PM
github actions pricing is the printer ink of compute
Reposted by Sean McCullough
Edit as you review. sketch.dev/blog/right-h...
June 23, 2025 at 10:40 PM
Edit as you review. sketch.dev/blog/right-h...
June 21, 2025 at 1:27 AM
Reposted by Sean McCullough
The Sketch blog has become the one thing you need to read—along with @simonwillison.net—to keep the pulse of LLM-assisted development.
Senior engineers putting in the work and giving no-bullshit perspectives.
Read this one by @crawshaw.io through. Not skim or half. Especially if you are a skeptic.
Senior engineers putting in the work and giving no-bullshit perspectives.
Read this one by @crawshaw.io through. Not skim or half. Especially if you are a skeptic.
sketch blog: How I program with Agents
2025-06-08 by David Crawshaw
sketch.dev
June 9, 2025 at 9:52 AM
The Sketch blog has become the one thing you need to read—along with @simonwillison.net—to keep the pulse of LLM-assisted development.
Senior engineers putting in the work and giving no-bullshit perspectives.
Read this one by @crawshaw.io through. Not skim or half. Especially if you are a skeptic.
Senior engineers putting in the work and giving no-bullshit perspectives.
Read this one by @crawshaw.io through. Not skim or half. Especially if you are a skeptic.
Reposted by Sean McCullough
Some recent experiences programming with agents. crawshaw.io/blog/program...
June 8, 2025 at 6:35 PM
Some recent experiences programming with agents. crawshaw.io/blog/program...
Fig 1: sync.Mutex usage, after you try to get the AI to modify some code that mentions concurrency
June 5, 2025 at 12:26 AM
Fig 1: sync.Mutex usage, after you try to get the AI to modify some code that mentions concurrency
Reposted by Sean McCullough
sketch.dev is great, it's banging away writing tests for me as I type this and so far they've been high quality and worth the $1 USD in Anthropic API credits I've paid for.
I think specifically the quality for Go projects above Claude is minimal but just enough that I trust sketch more.
I think specifically the quality for Go projects above Claude is minimal but just enough that I trust sketch more.
sketch.dev
sketch.dev
May 26, 2025 at 1:08 AM
sketch.dev is great, it's banging away writing tests for me as I type this and so far they've been high quality and worth the $1 USD in Anthropic API credits I've paid for.
I think specifically the quality for Go projects above Claude is minimal but just enough that I trust sketch more.
I think specifically the quality for Go projects above Claude is minimal but just enough that I trust sketch more.
Reposted by Sean McCullough
If you are interested in an easy recipe for a merge queue, sans code review, this is my favorite so far: sketch.dev/blog/lightwe...
sketch blog: A Lightweight Merge Queue using GitHub Actions
sketch.dev
May 8, 2025 at 10:01 PM
If you are interested in an easy recipe for a merge queue, sans code review, this is my favorite so far: sketch.dev/blog/lightwe...
hypothesis: naive adoption of coding assistants can lead very small teams through initial short-term gains in IC productivity, but long term into situations where they get bogged down by communication and coordination problems we normally only associate with much larger traditional teams
May 1, 2025 at 10:02 PM
hypothesis: naive adoption of coding assistants can lead very small teams through initial short-term gains in IC productivity, but long term into situations where they get bogged down by communication and coordination problems we normally only associate with much larger traditional teams
So is there like some kind of vibe-sre that's gonna be on the hook to vibe-support all these vibe-coded apps? I wonder what their VLIs, VLOs and VLAs are.
April 25, 2025 at 10:16 PM
So is there like some kind of vibe-sre that's gonna be on the hook to vibe-support all these vibe-coded apps? I wonder what their VLIs, VLOs and VLAs are.
vapecoding is when the bill for your vibecoding session comes out to exactly $4.20
March 21, 2025 at 11:46 PM
vapecoding is when the bill for your vibecoding session comes out to exactly $4.20
Reposted by Sean McCullough
Chuck Schumer is a call to action not a name
March 14, 2025 at 2:04 AM
Chuck Schumer is a call to action not a name
Reposted by Sean McCullough
Everything happens too much. Nothing never happens enough.
March 4, 2025 at 5:21 PM
Everything happens too much. Nothing never happens enough.
Reposted by Sean McCullough
New sketch.dev feature: public sketches are go get'table.
February 18, 2025 at 5:54 PM
New sketch.dev feature: public sketches are go get'table.
will he put the private health insurance industry into the wood chipper too or no
February 17, 2025 at 11:23 PM
will he put the private health insurance industry into the wood chipper too or no