Projects & Work
A lifelong builder and technology enthusiast. From code to hardware, constantly creating and experimenting with new technologies.
Full-stack applications, APIs, and products built with modern technologies — from startup MVPs to production systems serving thousands of users. With 113+ repositories on GitHub, contributing to open source is a core part of how I build.
CI/CD pipelines, containerized deployments, cloud architectures, and open-source tools for developer productivity.
Autonomous robots, IoT devices, 3D printing projects, and experiments at the intersection of software and the physical world. From connected sensors to CAD-designed prototypes.
Machine learning prototypes, LLM integrations, generative AI explorations, and side projects pushing the boundaries of what's possible — including embodied AI and physical systems.
The fourth chapter of building XergioAleX.com — how the entire blog system works: Content Collections as a data layer, a three-tier tag taxonomy, client-side search, post series with floating navigation, bilingual content, and why every piece of complexity lives in the build, not the browser.
The third chapter of building XergioAleX.com — implementing a complete analytics stack using only free tools, without losing the Lighthouse 100 scores or adding cookie banners. A practical guide to privacy-first, performance-preserving web analytics.
The detailed story of taking XergioAleX.com from great to perfect — achieving 100/100/100/100 on Google Lighthouse PageSpeed Insights for Performance, Accessibility, Best Practices, and SEO, on both mobile and desktop.
The complete story behind XergioAleX.com — from a one-page landing to a bilingual, AI-ready, performance-first personal platform. A deep dive into architecture, technology choices, and why Astro + Svelte is a killer combo for modern static sites.
The story behind migrating pereiratechtalks.com — from a Dockerized Ghost setup with monthly costs to a static Astro site deployed for free on GitHub Pages. Ten years of lessons condensed into two weeks of code.
The story behind the XergioAleX ninja coder brand — from concept to execution. Logo symbolism, color palette, design variants, and a complete style guide.
How I built WebVR experiences with just HTML and JavaScript — a VR maze game, a 360° photo gallery, and over 20 demos that proved virtual reality doesn't need expensive hardware.
How we built the Rocka.co website — from classical statue metaphors and custom parallax effects to a CSS Design Awards Special Kudos. The story of crafting a digital identity for the incubator where DailyBot was born.
A university project for Advanced Databases class — connecting Django to 10 different database engines (SQL and NoSQL) through Docker containers, demonstrating multi-database management and microservices architecture.
From RDDs to real-time streaming — how I built hands-on notebooks, a Docker cluster, and a full presentation to teach Apache Spark as my Big Data course final project.
The story of diving deep into Webpack 4 through hands-on exercises — from basic loaders and CSS preprocessors to code splitting, DLL optimization, React integration, and even backend bundling. The learning journey that turned a mysterious black box into my go-to build tool.
University projects from my Logic and Constraint Programming course — from classic puzzles in Prolog to constraint solving in Mozart/Oz, culminating in the Four Color Theorem applied to Colombia's map.
The story of my Data Structures course at university — implementing stacks, queues, trees, graphs, and Dijkstra's algorithm in Java, culminating in an unbeatable Tic-Tac-Toe AI using the Minimax algorithm.
Two university projects from my Object-Oriented Programming course — a Sudoku solver using the Observer pattern and backtracking, and a contact agenda with file persistence, both built with Java Swing.
The story of how Programming 2 introduced me to C, pointers, memory management, and building games with Allegro — the semester where I learned what the computer is actually doing under the hood.
The story of how I learned to program with DrScheme (now DrRacket) at university — from the confusion of prefix notation and recursion to building a mathematical function plotter with derivatives.
The story of building a fully functional real-time chat with Meteor.js in a single afternoon — to prove to a room full of developers that it could be done.
The story behind my first web project — a university database course final that became my introduction to PHP, SQLite, and web development.
How building a cargo transport platform with university friends taught me the most valuable entrepreneurial skill: telling a story that makes people believe.