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lelc

84 karma · joined November 3, 2017

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lelc··on Ask HN: Who is hiring? (February 2024)
Only 5 points out of 200 are about administrative law.

Pretty sure Leetcode subscription costs more than R$150 :) .

But yeah, if you are Donald Knuth, you can probably make more money in other places... if its important for you.

lelc··on Ask HN: Who is hiring? (February 2024)
Banco Central do Brasil | Brazil | REMOTE | Full-time | BRL280k

Embark on a journey with the Central Bank of Brazil (Bacen), the global epitome of innovation in central banking.

We proudly stand as the world's most innovative central bank. Bacen, the visionary creator and operator of the PIX payments system, leads the charge in financial technology innovation.

Position: Software Engineer

Location: Remote within Brazil

Contribute to cutting-edge financial technology projects.

Embrace the flexibility of remote work, allowing you to code from any corner of Brazil.

With 50 open positions and the potential for an additional 50, we present a rare opportunity for a hundred exceptional individuals to be part of our groundbreaking initiatives.

Selection Process: Entrance exam (concurso público) serves as the gateway to joining our team.

Visit https://www.bcb.gov.br/acessoinformacao/concursospublicos for comprehensive details.

Your chance to be a catalyst in the evolution of finance awaits. Join Bacen and redefine the future of financial technology with us!

lelc··on Brazilian hacker claims Bolsonaro asked him to hack into the 2022 voting system
The main point is that it is a lot easier to trust something you can understand than some black-box machine certified by experts. Thus, eletronic voting systems are more vulnerable to trust attacks.
lelc··on Brazilian hacker claims Bolsonaro asked him to hack into the 2022 voting system
> This creates another attack avenue, that is, you don't attack the results of the ballot, but you attack the entire system. You discredit the system because it is complicated, you use the limited understanding of the voter base to invalidate the results.

That is exactly what Bolsonaro did. He effectively proved the system is vulnerable to a trust attack... it does not matter if the system is safe from tampering if a significant part of the voters do not trust the system.

But this issue has become so politicized in Brazil that it has become impossible to discuss it reasonably. Pointing out any flaws in it is interpreted as an "attack to democracy".

lelc··on Brazilian hacker claims Bolsonaro asked him to hack into the 2022 voting system
The election system in Brazil is so perfect that you might go to jail if you say otherwise.
lelc··on Brazilian hacker claims Bolsonaro asked him to hack into the 2022 voting system
I would argue that an election system in which fraud is easy but obvious for everyone when present is more robust than a system in which fraud is hard but impossible for anyone to see.
lelc··on Brazilian hacker claims Bolsonaro asked him to hack into the 2022 voting system
That he did is the most revealing...
lelc··on Brazilian hacker claims Bolsonaro asked him to hack into the 2022 voting system
Calling this guy a hacker is a joke... as is this whole story. He is a scammer who got famous for accessing phone numbers of authorities using tricks he learned while scamming bank clients.
lelc··on Robinhood is said to draw on bank credit lines amid tumult
Shameless plug... Having worked on such systems, I recently wrote an article explaining real-time payment systems, some of which use real-time gross settlement:

https://luizlaydner.substack.com/p/how-do-instant-payment-sy...

lelc··on Fed announces details of new interbank service to support instant payments
Create a fit to purpose, simpler, protocol using a good interface specification language (OpenAPI or protocol buffers). Maybe borrow concepts and patterns from the ISO standard, but not adopt it. It will not deliver its promise of interoperability. It might actually make it harder to interoperate with other payment schemes.
lelc··on Fed announces details of new interbank service to support instant payments
Even the BCB itself has this ISO20022-xml to simpler-schema-in-json mapping layer.
lelc··on Fed announces details of new interbank service to support instant payments
If anyone from the FED is reading this I have this advice: don't use ISO20022! (I've been working on the brazilian instant payments project, known as PIX). It's an overly-complicated-try-to-solve-everything standard that promises interoperability but only delivers pain and misery. Since each country has its own standards for person and account identification, in dealing with these local realities, the ISO20022 adds quite a lot of complexity. But all this cost does not result in interoperability. In fact, each payment scheme end up with a localized version of the standard, incompatible with others. What could have been a clean API, ends up a mess.
lelc··on Ask HN: What's the worst piece of software you use everyday?
Seems like all tools in this space (IT service management) are terrible. At work I have to use HP Service Manager. Just thinking of it makes me nervous. Made for bureaucreats by bureaucreats!
lelc··on ksqlDB: Event streaming database for stream processing applications
Looks a lot like what VoltDB has for stream processing. Will definitely make developing streaming apps a lot easier.