Hello,
I'm Guillermo
Rodas
I build production AI systems and help developer communities level up.
From Colombia
Living in Sweden
Personal profile
Languages
🇬🇧
English
Fluent
🇪🇸
Spanish
Native
🇸🇪
Swedish
Elementary
Senior Full-stack AI Engineer with 13+ years of experience building production systems at the intersection of web engineering and AI.
At EQT Group, I contribute to the Motherbrain ecosystem, the private equity industry's pioneering AI platform, monitoring 10M+ companies, delivering AI-powered tools using LangChain, PGVector, and LLM integrations. Previously, I built microfrontend platform infrastructure at Klarna (serving 87M+ global consumers) and shipped identity management products at Auth0 during its hypergrowth from startup to $1B+ valuation.
I combine deep JavaScript, TypeScript, and React expertise with hands-on AI engineering (RAG, agents, embeddings) and a strong track record of developer enablement, as a former Google Developer Expert (2019–2025), international conference speaker, and bootcamp instructor who has trained hundreds of developers across Latin America and Europe.
Expertise
Skills
Frameworks
Expertise
AI & LLM
LangChain, LangSmith, Google ADK, CopilotKit, PGVector, RAG pipelines, prompt engineering, and LLM API integrations with OpenAI, Anthropic, and Google.
Data
PostgreSQL, BigQuery, MySQL, MongoDB, ElasticSearch, Kafka, and Firebase/Firestore, managing and querying datasets across millions of records in production.
Cloud & DevOps
GCP (CloudRun, CloudBuild, BigQuery, BigTable), AWS (S3, EC2, SQS, DynamoDB), Docker, Kubernetes, Datadog, CI/CD pipelines, and Linux (CentOS, Debian).
Auth & Identity
OAuth, OIDC, Auth0, Firebase Auth, and WebAuthn/Passkeys integrated with providers such as Google, Meta, Spotify, and X for secure authentication flows.
Backend platforms
Node.js with Express and Hapi.js, Python services, GraphQL via Apollo and GraphQL Mesh, and REST APIs powering scalable server-side solutions.
Methods & Delivery
Scrum, Kanban, Scrumban, and Lean practices, paired with Design Systems, microfrontend architecture, and hands-on technical training for teams.
Frontend frameworks
React (11+ years) with Hooks and state libraries like Redux and Zustand, Next.js for SSR and Server Components, and TypeScript across the stack.
Testing
Jest, Vitest, and Playwright for unit, integration, and end-to-end coverage, complemented by Storybook interaction tests and snapshot testing for regression prevention.
UI systems
Storybook for component development, Design Tokens for consistent branding, and Tailwind CSS, Material Design, and Ant Design for adaptable UI solutions.
Build tooling
Webpack and Vite production setups, plus NPM scripts and Yarn Workspaces for managing monorepos and dependency graphs across teams.
Reactive platforms
Meteor for reactive full-stack and mobile applications, leveraging its real-time data and pub/sub capabilities.
Career experience
2026
2019
2016
2015
2012
EQT Group
4 years 9 months
About
EQT is a global investment organization managing €130B+ in assets. Its proprietary AI platform, Motherbrain, monitors 10M+ companies and has directly sourced investments valued at hundreds of millions of euros.
Functions
Senior Full-stack AI Engineer.
My achievements
AI-Powered Deal Intelligence Tools. Built and shipped internal AI tools that leverage LLMs to streamline investment opportunity screening and enable faster, data-driven decision-making. Implemented RAG pipelines with PGVector for semantic search over proprietary deal data, and integrated LangChain-based workflows with LangSmith observability for production monitoring. Tech: Next.js, TypeScript, Python, LangChain, LangSmith, Google ADK, CopilotKit, PostgreSQL, PGVector, GCP, BigQuery, ElasticSearch, Datadog.
Design System Foundations. Established the foundations of a shared Design System with component scaffolding and automated testing infrastructure, enabling consistent UI/UX patterns across internal products and reducing frontend fragmentation across teams. Tech: React, TypeScript, Storybook, Playwright, Design Tokens.
Engineering Culture & Tech Debt Reduction. Led cross-team technical improvement initiatives, introduced new technologies, and organized recurring knowledge-sharing sessions that improved engineering practices and accelerated onboarding for new team members.
About
Klarna is a global fintech serving 87M+ consumers and 250,000+ merchants, processing over 1M transactions daily across 17 markets. Valued at $10.65B in 2020 and later at $45.6B in 2021.
Functions
Engineer (Foundations team).
My achievements
Microfrontend Platform Infrastructure. As a member of the Foundations team, designed and maintained 20+ shared UI packages consumed by 5+ product teams. These microfrontend packages formed the core interface layer used in Klarna's flagship checkout, payments, and consumer-facing products, supporting experiences that served millions of transactions daily. Tech: React, TypeScript, JavaScript, Microfrontend Architecture, NPM, Yarn Workspaces.
Continuous Delivery Transformation. Drove improvements to the continuous delivery pipeline, transitioning the team from 5–10 scattered micro-deployments to a streamlined daily deployment cadence with on-demand hotfix capability, directly reducing deployment friction and improving release reliability for dependent teams. Tech: CI/CD, NPM scripts, automated testing, deployment pipelines.
About
Auth0 is a cloud identity platform (now part of Okta) that safeguards billions of login transactions monthly. During this period, the company achieved 80–100% annual growth in revenue and customers, raised a $103M Series E reaching $1B+ valuation, and expanded from ~100 to 578 employees across 33 countries.
Functions
Engineer.
My achievements
Internal Products & Developer Tooling. Developed multiple internal products powering Auth0's platform operations, using Hapi.js, MongoDB, React, and Redux. Enhanced the team's development workflow by introducing Storybook for component development and snapshot testing for regression prevention, which improved development velocity and reduced visual regressions across the product suite. Tech: React, Redux, Hapi.js, MongoDB, Node.js, Storybook, snapshot testing.
About
Huge is a global digital agency working with Fortune 500 brands to redefine what's possible for the world's most ambitious companies.
Functions
Web Engineer.
My achievements
Fintech Web Application. Contributed to a Fintech web app using React and Redux, optimized for cross-browser and cross-device compatibility, including legacy support for IE10 on Windows and Safari on iPhone 4S. Tech: React, Redux, Vanilla JavaScript, cross-browser development.
Mobile Web Performance. Led frontend development on a performance-critical mobile web app, ensuring seamless behavior across diverse devices and browsers.
Technical Training. Facilitated multiple technical training sessions for both Frontend and QA teams, raising engineering standards across the office.
About
Komet is a SaaS platform for the floral industry that gives businesses the tools to automate processes while connecting with their key business partners.
Functions
Full-stack Developer.
My achievements
Platform Engineering. Played a key role in multiple corporate projects using MySQL and Java (Spring, Hibernate), and led the definition of the frontend architecture and tech stack for the company's products. Tech: Java, Spring, Hibernate, MySQL, JavaScript.
Process Modernization. Drove the migration from SVN to Git and championed the adoption of Scrum, fundamentally improving development velocity and team collaboration.
Recognition & community
Recognition
Speaking
Mentorship
Podcasts
Meetups
Recognition
Google Developer Expert
Web Technologies
2019 – 2025
Auth0 Ambassador
Identity & Security
2022 – 2024
Twitch Partner
Live Coding & Developer Education
2020 – 2025
The Language of AI: Probability
DevFest Ourense
November 2025
DevFest Mediterranean
December 2025
WebAuthn & Passkeys: The Future of Authentication
DevFest Singapore, EpicHey!
November 2023
DevFest Zagreb
October 2023
Why everyone should do streaming live coding?
DevFest Stockholm
December 2022
Nerdearla
August 2022
Online Teacher
Platzi
December 2018, July 2019, March 2023
Código Facilito
September 2023
Bootcamp Instructor
Código Facilito
October 2022, February 2023, March 2024
Undefined Academy
March 2023 - October 2023
Platzi Master
November 2020 - September 2022
World Tech Makers
June 2017 - August 2017
Mentor
Women Developer Academy Europe
October 2021, October 2023
Hyper Island
March 2021
The Konferense
September 2020
Techstars Startup Weekend
June 2019
Community Organizer
CSS Conf Colombia
April 2021 - December 2023
CSS Community Dev
June 2018 - December 2023
Medellín Java
December 2014 - November 2016
AI and Humans: Invincible Innovation
Staying Ahead in AI: Practical Insights for Developers
April 2025
freeCodeCamp en Español
From Java to JavaScript
December 2023
Humans of Platzi
The power of English and networking
July 2023
EnPixeles
Creating communities in post-pandemic
December 2021
24H24L
I already know how to code, what's next?
December 2021
La liga del código
Security in the Front-end
August 2020
Laravel Dev & Vue
Handling Security in the Front-end
June 2020
Magenta Codes
How to succeed as a Full-Stack Engineer
April 2020
Medellin CSS
Don't use a pre-processor anymore
August 2020
Tips for giving a talk
June 2019
CSS Layout
June 2018
How to scale CSS in Design Systems
October 2018
The Last CSS Framework
April 2018
Medellin Java
Modern Web apps with jHipster
May 2015
Introduction to Spring Security
April 2015
Spring Core advantages
January 2015
NodeCo
In the middle of the middleware
March 2019
ReactJS Top
The future of state management
March 2019
Wordpress Medellín
WooCommerce and React
October 2018
Medellin JS
How to quit using jQuery
May 2015
Medellin PHP
How to install Laravel in Codio
October 2014
Knowledge background
Education
Courses
Seminars
Education
UX Designer Upskill
Hyper Island
October 2023 — May 2024
Technical assistant in Digital Graphic Design
CENSA
October 2017 — June 2018
Systems engineering (undergraduate)
Universidad Nacional de Colombia
January 2007 — January 2010
Platzi
JavaScript Backend Career
80 Hours, March 2019
English Career
80 Hours, March 2019
Frontend Architect Career
80 Hours, December 2018
Actívate
Google Analytics Course
40 Hours, December 2017
Coursera
Swift: programming for iOS
30 Hours, March 2016
Web Application Development with JavaScript and MongoDB
8 Hours, March 2016
Introduction to Meteor.js development
12 Hours, February 2016
Mejorando.la
Professional Backend Course
12 Hours, February 2014
Professional Frontend Course
12 Hours, July 2013
HTML5 Course
20 Hours, July 2012
Amazon Web Services
AWS Business Professional Accreditation
10 Hours, June 2014
SENA
Database Design in SQL
40 Hours, November 2010
Variables and structures of control in POO: JAVA
40 Hours, November 2010
Universidad Nacional de Colombia
Web programming with PHP and MySQL
50 Hours, July 2010
Institución Educativa Concejo de Medellín
Middle Technical in Multimedia production and Software Design
280 Hours, December 2007
Agiles.org
VII Latin American Workshops on Agile Methodologies
24 Hours, October 2014
Campus Party Colombia
Campus Party 7 Colombia
300 Hours, June 2014
Campus Party 6 Colombia
250 Hours, October 2013
Campus Party 4 Colombia
521 Hours, July 2011
Google Developer Bus Bogota