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Marcelo Terreiro Profile
Marcelo Terreiro

@mprado

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Staff Engineer @brexhq. I like to build cool shit and ride bikes ๐Ÿ๏ธ

Sao Paulo, Brazil
Joined March 2016
Don't wanna be here? Send us removal request.
@mprado
Marcelo Terreiro
1 year
One of the nicest side-effects of our new front-end architecture is how much more LLM friendly it is. Compared to before, @brexHQ new stack is more powerful and effective when it comes to LLMs outputting correct code. Let me expand..
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@mprado
Marcelo Terreiro
4 days
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@mprado
Marcelo Terreiro
8 days
The only annoying thing is that kysely generates raw string for tstzrange columns. You can solve this with a branded type + customImports + typeMapping
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@mprado
Marcelo Terreiro
8 days
tstzrange is so underpowered i can't even explain. The fact you can create a DB constraint that prevents ranges from overlapping is simply beautiful. Very useful for easily controlling things that expire AND need some audit of when it was active Thanks @JarrodRuhland for the
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@mprado
Marcelo Terreiro
15 days
LLMS PLZ STOP FUCKING WITH BARREL FILES
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@mprado
Marcelo Terreiro
15 days
One of the best things in the world is to be surrounded by people smarter than you. We hired a new person to lead a key area at Brex and I swear to god, that dude is cracked. Makes me feel like an entry level eng again, insane
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@mprado
Marcelo Terreiro
17 days
Jamming over the next version of Brex app with some friends from @expo
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@mprado
Marcelo Terreiro
23 days
I just need a 10x cheaper Opus 4.5. Then weโ€™re done, GG. @bcherny plz make this happen
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@mprado
Marcelo Terreiro
26 days
this is how i feel like when I've exhausted my personal @cursor budget for the month
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@mprado
Marcelo Terreiro
29 days
friendly reminder that zod 4 codecs are an awesome API. LLMs aren't that good yet since their cut off dates, but it's a very solid way of encoding/decoding data super useful to decrease the amt of code you need to write
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@mprado
Marcelo Terreiro
1 month
mass-surgical-refactor seems like a beast agent to run ๐Ÿ˜„
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@mprado
Marcelo Terreiro
1 month
Yesterday I built a fully local TUI app to help me organize my net-worth/investments. Some features: - cash floor - custom asset classes + target bands - FIRE simulator - recommendation engine crazy how far Opus + a handful of prompts can take you hereโ€™s a little demo:
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@mprado
Marcelo Terreiro
1 month
one thing that astonishes me: how bad some engineers are at choosing sane defaults. Why do you have to fetch 1000 rows if no limit is passed? Are you crazy? Why poll every fucking second? Go with something more reasonable for your usecase. Don't be greedy
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@mprado
Marcelo Terreiro
1 month
A very sharp and experienced engineer showed me mise. After using for the last 3 days, it's hard to imagine going back to anything else - asdf and friends don't come close
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@mprado
Marcelo Terreiro
1 month
why is VSCode/Cursor Markdown preview so slow? it should take like a few ms most to preview a .md file
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@mprado
Marcelo Terreiro
2 months
It's almost 2026 and HackerNews still doesn't support dark mode
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@mprado
Marcelo Terreiro
2 months
every experience I had with @Shopify's API was legit ๐Ÿ’ฏ. From first-time onboarding, to Hydrogen setup, Github deployment, LLM integrations, their GraphQL API design, BFF experiences, and more. They even open a PR for you... how can a company of this size be that good?
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@mprado
Marcelo Terreiro
2 months
@leerob expected?
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@mprado
Marcelo Terreiro
2 months
the most annoying thing about @cursor_ai right now: how it hijacks any changes you make and thinks it belongs to the agent. Keep having to accept its suggestions to make the diff-ui disappear
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@mprado
Marcelo Terreiro
2 months
Serious question: do Apple engineers really use XCode? Its GPT integration is a complete joke. Fails to complete even the most basic request. How the heck a 4 TRILLION dollar company ship this?
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@mprado
Marcelo Terreiro
2 months
If I was starting something today, Iโ€™d give @cnakazawa โ€˜s fate a serious try. It takes the best of Relay ideas that are dear to my heart (colocation, masking, fat query) and make them accessible to tRPC backends. Such a nice API!
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