XergioAleX - CTO & Co-founder at DailyBot (YC S21)

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

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

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

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

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

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

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

The story behind the XergioAleX ninja coder brand — from concept to execution.

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

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

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.

Bringing virtual reality to the web and why democratizing VR matters.

Why voice-first design matters and how serverless powers the future of conversational interfaces.

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

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

My journey into serverless architectures and why they changed how I think about building IoT applications.

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.

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

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

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

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

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

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

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

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

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

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.

From Bitcoin's origins to industrial revolution — exploring how blockchain technology is reshaping money, trust, and the future of digital ownership.

Prolog and Mozart/Oz: logic puzzles, constraint solving, and four-coloring Colombia's map—university projects where you describe solutions, not steps.

Data structures in Java: stacks, queues, trees, graphs, Dijkstra, and an unbeatable Tic-Tac-Toe bot with Minimax—my university course end to end.

OOP in Java Swing: Sudoku with the Observer pattern and backtracking, plus a file-backed contact agenda—two university projects where patterns met real code.

Programming 2 brought C, pointers, memory management, and Allegro games—the semester I learned what the computer actually does under the hood.

Learning to code with DrScheme (now DrRacket): prefix notation, recursion, and a function plotter with derivatives in my first university course.

Why blockchain goes beyond cryptocurrency: supply chains, identity, voting, and how decentralized trust reshapes modern digital systems.

Building VR experiences with HTML — my talk at Pereira Tech Talks on A-Frame, Mozilla's framework bringing virtual reality to the web with zero configuration.

What I shared at PyCon Colombia 2018 on how applied mathematics lets us build AI models — linear algebra, neural networks, gradient descent, computer vision.

An academic experiment comparing sorting algorithms—complexity analysis and real execution times across two server configurations.

Connect a static contact form to Google Forms via HTTP POST — no iframe needed.

Why I moved from REST to GraphQL for microservices — divide and conquer, client-defined queries, and the trade-offs you need to know.

I gave this talk at Universidad de Caldas — tracing blockchain from the history of money to building decentralized apps with JavaScript.

My talk at the first Pereira Tech Talks meetup — exploring Google's TensorFlow, machine learning basics, and why AI was about to change everything.

From Bitcoin's blockchain to Ethereum's smart contracts — demystifying crypto for the Pereira JS community with a live Solidity demo.

I teamed up with Alejandro Rendon to explore IoT — from sensors and controllers to programming robots with JavaScript and Johnny-five.

When SQL tables aren't enough — my introduction to NoSQL databases, MongoDB's document model, and when to choose flexibility over rigid schemas.

My first tech talk ever — building a real-time chat app with Meteor.js from zero to working prototype in minutes, with reactive data and no WebSockets setup.

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.