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lucasarruda

27 karma · joined August 23, 2011

https://lucasarruda.com
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lucasarruda··on Amazon Is Requiring Passkeys
I doubt there is no passkey solution for Linux. Might not have a bundled one (maybe it will be added), but you could use something like KeePassXC, which is open source.
lucasarruda··on Ask HN: Who wants to be hired? (July 2026)
Location: Remote (Worldwide / Americas Timezones)

Remote: Yes

Technologies: Systems Architecture, Backend Infrastructure, Ruby on Rails, GraphQL, Node.js / Next.js, Cloud-Native AWS - GCP, AI/ML Pipeline Integrations, Telemetry, CI/CD Automation.

Resume: https://lucasarruda.com

Email: lucasarruda - gmail

Staff Engineer / Lead Architect with 15+ years of experience specializing in high-stakes infrastructure, system overhauls, and early product velocity. I partner with tech leaders and founders as an embedded, hands-on technical consultant (15–30h/week) to bridge the gap between initial demos and enterprise-ready systems.

What I specialize in tackling:

- Applied AI & Automation: Integrating AI engines for practical backend workloads, including image classification pipelines, automated log processing, and embedding security scanners into CI/CD workflows to catch and patch vulnerabilities early.

- HealthTech & Diagnostics: Architected platforms integrating complex clinical diagnostic engines, lab systems, and data pipelines with ironclad compliance, deep telemetry, and strict authorization layers.

- Scale & Telemetry: Re-engineered legacy backends, database schemas, and standalone telemetry engines to smoothly process heavy, live data flows and scale to millions of users.

- High-Velocity E-Commerce: Built complex payment gateways, transactional networks, and checkout pipelines designed to handle high-stakes flows cleanly without failure.

- Technical Leadership & Mentoring: Led, unblocked, and upskilled engineering teams to level up implementation paths, accelerate prototyping velocity, and establish sound architectural blueprints.

Looking for direct engagements with founders, VPs of Engineering, or CTOs needing an autonomous technical leader to own core infrastructure paths without executive overhead. Direct client engagements only; no third-party placement agencies.

lucasarruda··on Bootstrapping to €600k MRR and getting killed by Shopify: Checkout X
> Depending on the costs, 600,000 euros a month is pretty good even if it doesn't last forever.

What? 600k euro per MONTH is like you can retire forever in one year. That would be 7mm euro. More than like what most people make during their entire life.

But of course they probably made that in revenue, not profit. Still, I bet they are in a pretty good spot to create a new product, company, etc and with a nice cash reserve if they want to retire.

Btw, according to the article they still keep their old customers, so not like the service has being completely shut down. It's just that they can't take new customers, so at some point they should have pretty low revenue, but maybe they still have a fair amount per month like 100~200k with a super reduced team.

lucasarruda··on Ask HN: Is Ruby on Rails still relevant?
Super relevant! And there are tons of companies looking for Rails developers!

I know some people of the community moved to Rust or Node. But the Rails ecosystem is still the most complete out there.

The framework, as the language, is still evolving, getting quicker and integrating will all sorts of other tools (GraphQL, Elastic, etc).

Ruby is much faster in 2.7/3.x as it was in 1.9/2.0 era.

Rails is starting to try dropping node and all the JS package craziness. But still supports all them. So you can pretty much do HTML-over-the-wire, plain jQuery or go full-blown React/GraphQL/API using webpack or similar.

lucasarruda··on Ask HN: Who is hiring? (April 2020)
Thanks. Will apply!
lucasarruda··on Ask HN: Who is hiring? (April 2020)
I am in the same timezone, except I am not in North America. Is it ok or you can hire only in US/CA?
lucasarruda··on Ask HN: Who is hiring right now?
Thanks for putting that data. It's helping a lot.

It's funny how most companies are not really remote because they only hire in the US (even if you can work PST/EST), so they ignore the rest of the World. But I have been using the 'Anywhere' tag and found a bunch on interesting ones.

lucasarruda··on Ask HN: Who wants to be hired right now?
Full-stack Senior Software Engineer with over 10 years of experience.

Location: Brazil (Remote)

Remote: Yes

Willing to relocate: In the future

Technologies: Ruby on Rails, Java, Javascript, GraphQL, React, Redis, PostgreSQL, SQL, HTML, CSS

Résumé/CV: https://lucasarruda.com or https://linkedin.com/in/arrudalucas

email: lucasarruda at gmail

lucasarruda··on Lay-offs and Hiring Freeze due to Covid-19
My company was expecting some money to come this year – like they always do every year – to keep operating. Except this year money kept getting delayed until it never came. They have literally fired all engineers so the company can keep alive and operate until they find ways to get government or other types of money/assistance.

Not like they did this on purpose, but it was related to this epidemy.

Very sad.

lucasarruda··on Upgrading GitHub from Rails 3.2 to 5.2
Not to mention, they also "took time to clean up technical debt and improve the overall codebase while doing the upgrade".

That is no easy task, for such a big application.

lucasarruda··on New book from DHH: “It doesn't have to be crazy at work”
Intersting. Seems kind of along the lines of Rework.
lucasarruda··on Ask HN: What free or low-cost static site hosting do you use most?
Of all services mentioned here, this is the one I like the most and the one I think I'll use.

Their pay as you go makes totally sense when you have a static website that will be access sporadically and you don't want to rely in a public infrastructure such as Github.

I also don't want to depend on freemium services, because they could just shut down the free tier any time.

lucasarruda··on Why Your Next iPhone Won't Be Ceramic
To sum up: no one really knows for sure!
lucasarruda··on It’s Been Real, Android: Why I’m Retiring from Android
I guess his point is not that Android platform hasn't improved, but the effort itself to develop for it versus developing for iOS platform.

Cost benefit also is probably lot better on the iOS side ($$$ you get to develop an app / time to develop it).

lucasarruda··on Ask HN: How do you decide for a backend language?
Start based on the project itself.

If it's a personal project and there are no risks involved, it's a change to pick a new, innovative or trendy language, like Go, Elixir, Clojure, Rust, etc.

If it's a personal project, but you want to complete it fast, probably pick whatever you are more comfortable with. Don't try a new environment if you have to deliver in time.

If it's a corporate project and chances you are not alone in that project, pick whatever is more comfortable for the team. Don't try to innovate that much or you have a chance of have a world of not predicted problems with that language/environment.

But if it's a corporate project and you are mostly alone, then you could pick a different language from that world. Some language that you have deeper knowledge that others and maybe you wanted the team to try/adopt. And that's a quite nice opportunity to both showcase you abilities, initiative and the language itself - because companies generally have a hard time adopting new things.

lucasarruda··on Let Twitter Be Twitter
The saddest thing about Twitter's path is that the tool is so good, but if they don't fix the problem you just described (brilliantly btw), they can be doomed.
lucasarruda··on Ask HN: Who is hiring? (September 2015)
You should include ONSITE instead of 'sorry, no REMOTE', because people rely in keywords to search.
lucasarruda··on Ask HN: Who is hiring? (September 2015)
You should include ONSITE instead of REMOTE, because people rely on those keywords to search.
lucasarruda··on Bypass Quora signup wall by appending "?share=1" to URL
Funny thing is: the didn't always have that!
lucasarruda··on This slide deck won us US$25k and a trip to Silicon Valley
Really nice, guys. I like the fact that you guys prepared so much for that event, that success was the only result possible.
lucasarruda··on Why you should pay attention to Brazil’s ‘San Pedro Valley’
Very good article!! I like the fact it shows a lot of initiatives we are having in Belo Horizonte.
lucasarruda··on Opening a US Corporation: an Incorporation Guide for Foreigners – Part 2
It seems "simple" when you read it, but it must have taken a lot of time and effort to gather and do all this. Thanks for sharing! I`m waiting for the next post.
lucasarruda··on Opening a Delaware Corporation: an Incorporation Guide for Foreigners
Very nice post! Thanks for sharing all the process and info.