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Migrating Pereira Tech Talks: From Ghost to Astro

Migrating pereiratechtalks.org from Dockerized Ghost to static Astro on GitHub Pages — ten years of lessons packed into two weeks of code.

Astro in Action

Why Astro won me over — Microsoft and Firebase cases, measurable gains, and a live Pereira Tech Talks migration to prove it is not hype.

What Is Market Profile in Trading (and Why It Changed My Process)

Market Profile as a visual framework for imbalance zones, institutional flow, and structured trading decisions instead of pure intuition.

2/3 Trading Journey: From Futures to Algorithms

My Trading Journey: From Futures to Forex

From futures with friends to Forex and Market Profile — discipline, psychology, and consistency matter more than chasing fast profits.

1/3 Trading Journey: From Futures to Algorithms

How AI is Revolutionizing Modern Application Development

What changed between May and August 2023: Manizales Tech Talks on AI transforming app development, three months deeper into the revolution.

The Rebirth of Artificial Intelligence

From my Pereira Tech Talks talk: why ChatGPT and GPT-4 ended the AI winter and started a generative revolution I experience daily.

How We Got Into Y Combinator

Three YC applications, three rejections, one acceptance — what changed each time, the real interview, and scaling DailyBot after YC.

Looking for Product Market Fit

Building and failing products at Rocka.co — lessons from each experiment, reading real PMF signals, and how DailyBot finally stuck.

Introduction to MyPy

Why we adopted type checking at DailyBot — from untyped Python chaos to catching bugs before runtime, reducing cognitive load, and shipping with confidence.

Building kathelopez.com: The Website I Built for My Wife

A simple static site for my wife, an ABA therapist and neuropsychologist: Bootstrap, GitHub Pages, zero backend, professional presence online.

Building the XergioAleX Brand: The Ninja Coder Identity

The story behind the XergioAleX ninja coder brand — from concept to execution. Logo symbolism, color palette, design variants, and a complete style guide.

2/9 Building XergioAleX.com

CSS Grid Layout

How CSS Grid changed the way I think about layouts — from Flexbox limitations to two-dimensional freedom, with practical exercises and accessibility tricks.

Vue Vixens Talk: Styles in Vue

Why styling matters in component-based frameworks and how Vue makes CSS scoped, modular, and powerful. From preprocessors to component architecture.

Building Virtual Reality for the Web: A-Frame, Mazes, and 360° Galleries

How I built WebVR with HTML and JavaScript: a VR maze, a 360° gallery, and 20+ demos proving browser VR doesn't need expensive hardware.

WebVR with A-Frame (UniRemington Talk)

Bringing virtual reality to the web and why democratizing VR matters. From 360° photos to interactive 3D worlds, all with HTML and JavaScript.

Serverless, IoT and Conversational Interfaces

Why voice-first design matters and how serverless powers the future of conversational interfaces. From Alexa skills to IoT integration.

Let's Talk About Flutter

Why cross-platform development matters and how Flutter's widget model changed my approach to building mobile apps. From React mindset to Dart magic.

Docker Introductory Workshop

Hands-on Docker at Rocka Labs—from containers and images to Dockerfiles, volumes, networks, and Compose—your practical introduction to Docker.

Introduction to Serverless with Emphasis on IoT

My journey into serverless architectures and why they changed how I think about building IoT applications. From meditation apps to smart light bulbs.

Yo Me Llamo Héctor Lavoe: Building a Personal Website for a Salsa Artist

Website for a Yo Me Llamo contestant as Héctor Lavoe: audio player, gallery, and a jPlayer Safari fix that took an afternoon over three pixels.

Introduction to Webpack

How Webpack transformed front-end development—my talk on entry points, loaders, plugins, and why developer experience beats configuration complexity.

Building Rocka.co: The Story Behind a Tech Venture Builder Website

How we built Rocka.co—from statue metaphors and parallax to a CSS Design Awards Special Kudos—for the incubator where DailyBot was born.

Docker Introduction

What I shared in a talk on Docker and microservice-oriented architectures — containers, microservice characteristics, and practical demos.

BSolutions: Managing Multiple Database Engines with Django and Docker

Advanced Databases class project: Django talking to ten SQL and NoSQL engines via Docker—multi-database ops and microservices architecture in practice.

History, Discussion, and Analysis of the Bitcoin Paper by Satoshi Nakamoto

A deep dive into Satoshi's Bitcoin whitepaper—what makes it revolutionary, the technical ideas that stuck with me, and why it changed finance.

Introduction to APIs with GraphQL

Why GraphQL changed how I build APIs: strong typing, client-driven queries, one endpoint, and an experience that makes REST feel outdated.

Introduction to Vue.js

Why Vue became my favorite framework after years of Angular and React — a deep dive into progressive design, reactivity, and what makes Vue special.

Taming Big Data: An Introduction to Apache Spark

From RDDs to streaming: notebooks, a Docker cluster, and a presentation teaching Apache Spark for my university Big Data final project.

Learning Webpack: The Exercises That Changed How I Build for the Web

Hands-on Webpack 4: loaders, preprocessors, code splitting, DLL optimization, React integration, and backend bundling—how practice demystified the bundler.

Introduction to GoLang

Why Go won me over — my Pereira Tech Talks session on Go's simplicity, built-in concurrency, and how it solves real problems with less ceremony.