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Hi, I'm

Vanessa Marely Aristizábal Ángel

Frontend-focused fullstack developer from Medellín, Colombia. Google Developer Expert in Angular and Web, GitHub Star, writer, mentor, speaker and illustrator.

I build

Read my articles See my talks
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About me

Code, community
and lots of pencils

I'm a curious developer, passionate about technology and in love with the Web. I'm a frontend-focused fullstack developer: I build interfaces with Angular and React, and the services and APIs behind them with Node.js. I love sharing what I learn through articles, talks and mentoring.

I'm into web development, design, illustration and animation. When I'm not coding, I'm reading, traveling or rewatching Harry Potter.

Public repos
190
Articles
29
Based in
MDE
05.93° N, 75.67° W

Born in Fredonia, Antioquia

Coffee country in southwestern Antioquia, with Cerro Bravo on the horizon.

06.17° N, 75.59° W

I live in Envigado

Among green mountains, right next to Medellín.

06.25° N, 75.56° W

I work in Medellín

Where I build software and tech community.

Google Developer Expert

Angular & Web Technologies

GitHub Star

Open source and community

Reader, traveler and Harry Potter fan

I also keep a travel journal: drawings, tickets and notes from every trip.

Stack

My toolbox

13+ years building frontend-focused fullstack web applications: reusable, accessible components, Node.js APIs, automated testing and AI-assisted development workflows. Hover over the orbit to pause it.

Frontend

  • React
  • Next.js
  • Angular
  • Astro
  • React Native
  • TypeScript
  • Storybook
  • Styled Components
  • Tailwind

Backend & APIs

  • Node.js
  • Express
  • NestJS
  • GraphQL
  • REST
  • PHP
  • Python
  • Contentstack

Testing & quality

  • Jest
  • React Testing Library
  • Playwright
  • Axe DevTools
  • Lighthouse
  • WCAG 2.2

AI & tools

  • Claude Code
  • GitHub Copilot
  • AI agents
  • MCP
  • Docker
  • Git
  • Webpack
  • Vite
Talks & community

On stage
and behind it

Since 2018 I've been speaking at conferences, meetups and workshops across Latin America: Angular, web performance, DevTools, accessibility and AI-powered development.

77
talks 11.4k attendees
21
workshops 908 attendees
16
mentoring sessions 186 people
122
pieces of content 72.8k readers

Where I've spoken

Map of the cities where Vanessa has given in-person talks Venezuela Uruguay Puerto Rico United States South Georgia and the South Sandwich Islands Falkland Islands Trinidad and Tobago Suriname Peru Paraguay Panama Nicaragua Mexico Jamaica Honduras Haiti Guyana Guatemala France El Salvador Ecuador Dominican Republic Cuba Costa Rica Colombia Chile Brazil Bolivia Belize Bahamas Argentina Antarctica Medellín Medellín, Colombia: 35 talks Bogotá Bogotá, Colombia: 8 talks Quito Quito, Ecuador: 3 talks Barranquilla Barranquilla, Colombia: 2 talks Ica Ica, Peru: 2 talks Santo Domingo Santo Domingo, Dominican Republic: 1 talk Santa Cruz Santa Cruz, Bolivia: 1 talk Chía Chía, Colombia: 1 talk Lima Lima, Peru: 1 talk Guadalajara Guadalajara, Mexico: 1 talk Hermosillo Hermosillo, Mexico: 1 talk Santiago Santiago, Chile: 1 talk São Paulo São Paulo, Brazil: 1 talk Pereira Pereira, Colombia: 1 talk Cali Cali, Colombia: 1 talk Guatemala City Guatemala City, Guatemala: 1 talk Campeche Campeche, Mexico: 1 talk Buenos Aires Buenos Aires, Argentina: 1 talk

Recent talks

2026 17 activities · showing 5

  • Fast AI, Fluid UI

    Talk DevFest Santo Domingo Santo Domingo, Dominican Republic

  • WebMCP in Action

    Talk DevFest Quito Quito, Ecuador

  • Building Agentic Apps with Gemini Flash and Nano

    Talk GoFest Bogotá Bogotá, Colombia

  • Effective Prompting & Workflows with Gemini

    Talk GoFest Bogotá Bogotá, Colombia

  • Orchestrating Multi-Agent Workflows with Gemini Flash

    Talk GoFest Bogotá Bogotá, Colombia

2025 17 activities · showing 5

  • Chrome DevTools With AI

    Talk DevFest Bogotá Chía, Colombia

  • Chrome DevTools With AI

    Talk DevFest Lima Lima, Peru

  • Build Your Portfolio with GitHub Copilot

    Workshop Break the Code · N-iX Medellín, Colombia

  • Debugging Performance in a Galaxy Far, Far Away

    Talk JSConf México Guadalajara, Mexico

  • Debugging Performance

    Talk Online talk Online

See the full history (143) with resources
Open source

Projects to share

Open source projects, tools and the code from my talks, ready to clone, learn from and contribute to.

See all projects
Talks & workshops 7

Fast AI, Fluid UI

Two apps for the talk on AI-generated UI without layout shifts or latency: performance, structured outputs and WebMCP.

Used in: DevFest Santo Domingo 2026

Updated:

  • AI
  • Performance
  • WebMCP
Talks & workshops 10 1

WebMCP in Action

A WebMCP demo, the proposed standard that lets a page expose its features as tools for AI agents.

Used in: DevFest Quito 2026

Updated:

  • WebMCP
  • AI
Talks & workshops 1

Agentic Web Starter · GoFest codelabs

Monorepo with every GoFest Bogotá codelab: an offline-first client with Gemini Nano, a multi-agent orchestrator with Gemini Flash and a codelab-style presentation app.

Used in: GoFest Bogotá 2026

Updated:

  • Gemini
  • Agents
  • Codelab
Open source 2

AI Playbook

A reference guide and sample package for structuring agents, skills, prompts, commands and policies in a repository.

Updated:

  • AI
  • Agents
Open source 160 20

Frontend Resources

A collaborative guide with resources to learn frontend: courses, docs, tools, communities and more. Open to contributions.

Updated:

  • Frontend
  • Community
  • Astro
Talks & workshops 1

Hands-on guide to GitHub and Copilot

Repositories, branches, pull requests, issues, workflows and GitHub Copilot, explained with exercises.

Used in: Mentoring: Invima & Google AI Hackathon · GoFest Bogotá 2026

Updated:

  • GitHub
  • GitHub Copilot
Writing

What I've written lately

See all (29)