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Engineering posts, tools, releases, and practical dev workflows.

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My first daily update here - moving on with day 107

I have a long-running series of daily web dev diary on LinkedIn, but I decided to move it to a more developer-related community, so here is how my day of learning went! I'm continuing to dive deeper into React, and today

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Moonbug: a cosmic lunar calendar and event catalogue

How I Built It: The "Boss-Agent" Workflow My development process was a study in AI orchestration. I operated at a "Boss-Agent" level, managing two distinct AI entities to take Moonbud from a mobile concept to a live depl

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Show Dev: A Dragon That Burns Your Village If You Misspell

The pitch I built The Dragon's Dictionary : a bilingual (English/Portuguese) word game where a hoarding dragon eats words you feed it. Spell them right, the dragon is pleased and adds them to its hoard. Spell them wrong,

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my-cool-blog - jerseyctf6

Challenge Overview This challenge involves chaining multiple vulnerabilities — Directory Traversal , Local File Inclusion (LFI) , and a PHP filter bypass — to extract database credentials and retrieve the flag directly f

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C# Lowering: The Compiler Magic Behind Your Code

This article is based on official sources, compiler code exploration, experimentation using decompiler tools, and real-world experience. Have you ever been told that a for loop is faster than a foreach , or that yield re

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I'm with STUPID ⤴️

I have an idea. As serious and professional developers of serious and professional things, we have all encountered the standard, boilerplatey documents in serious and professional projects. Such files include, but are no

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Why closures finally clicked for me after 2 years

Closures aren't magic, but for two years, I genuinely thought they were dark sorcery. If you've ever felt utterly baffled by how a function remembers variables from its parent scope long after the parent has returned, yo

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One-trick ponies are easy to replace

There's a structural weakness in almost every app built in the last decade and we don't talk about it much because we're all doing it. The app requires our infrastructure to function. The moment we stop paying the server

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Data pipeline around 15 minute city

Hi, I just wrapped up my second data engineering pipeline. Repository: GitHub - OSM 15 Minute City Dashboard: Streamlit - OSMaps It is based on 15 minute city concept. Ingests open street maps, transformations via spark

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Why watermark your photos?

Why watermark your photos? If you have ever found one of your images on someone else's website, social media account, or marketing material without credit, you already know the problem. Image theft is not an edge case, i

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Aprenda avaliar a qualidade do seu agente de AI, RAG e LLM

Introdução Exatamente hoje 19/04/2025 eu venho acompanhando ou pelo menos tentando acompanhar as novidades dos Harness, protocolos, novas versões de LLM e frameworks. Porém trabalhando e conversando com a comunidade eu p

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Vibe Designing

Since Karpathy coined the term vibe coding , some of my non-coding friends have been showing me their work and teasing me that they can now do everything I can. Anthropic just dropped Claude Design . Now it's my turn. Sh

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Multi-Agenten-Systeme: Wenn KIs miteinander arbeiten

Stell dir vor, du willst einen langen Bericht über den deutschen Wohnungsmarkt erstellen. Du bittest eine KI darum. Sie recherchiert, schreibt, zitiert und liefert dir nach fünf Minuten einen Text, der gut klingt, aber b

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Introduction to Machine Learning

What is Machine Learning? One of the many subsets of AI that focus on learning patterns from datasets to make predictions or decisions without explicit programming. By training algorithms on large datasets, these models

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X-Ray Vision - jerseyctf6

Challenge Overview This challenge involves finding a hidden token in a webpage's source code, decoding it using the ROT13 cipher, and using it to authenticate against an API endpoint to retrieve the flag. Key concepts: R

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