A bit of me
Hi, I'm Guille. Good to have you here.
I'm a software engineer, and I like building things people actually use - platforms, tools, workflows, and the occasional experiment that exists just because I wanted to see if it would work. Most of what I've -digitally- built over the years lives on this page.
Away from the keyboard I'm usually spending time with my family, doing some air photography, or building furniture for the house that nobody asked for.
I also write Refactored, a short weekly newsletter that sums up the tech and science stories worth knowing about, in the time it takes to finish a coffee.
If something here catches your eye, or you have a project in mind, get in touch, I'd love to hear about it.
My work
Each card below is a glimpse into my world of innovation, where technology meets creativity.
Dive in and explore!
Is This AI Generated
Free AI writing tell checker
Tooling
Desktop
Mobile
Paste text and see exactly which AI writing patterns it contains, with...
MapToSTL
Free 3D map generator
Tooling
Desktop
Turn any country into a 3D printable map, free and entirely in your br...
AI Chatbot & local LLM
Volvo Cars
API
Desktop
Mobile
Case Study
A GPT-like chat experience powered entirely by locally hosted language...
Down@Volvo
Volvo Cars
Tooling
API
Desktop
A customizable endpoint monitor that spots outages before your users d...
CV Maker
Sigma Connectivity
Platform
Desktop
A complete resume-building platform with a rich set of built-in editin...
Refactored.
The Shortest Tech Newsletter
Landing
Blog
Tech and science news in a couple of minutes, a single landing scroll ...
DLT GDPR Analyzer
Automotive
Tooling
API
Open Source
Detects, masks and reports sensitive data hiding in automotive log fil...
Angelita
Angela Sanguino
Landing
Platform
Desktop
A landing page and booking platform for psychology consulting. Client...
CtrlShift
Tooling
Platform
Mobile
Personal finance control for home and small business, on mobile and de...
An Echo of The Heart
Daniela Garcia
Landing
Blog
Desktop
Mobile
Creative, Aware, Inspire, the online home of writer Daniela Garcia. P...
Marketplace Mapper
Chrome
Tooling
Open Source
A Chrome extension that puts Facebook Marketplace listings on an inter...
AudiologÃa MEF
Lic. M. Elisa Fontana
Landing
Platform
Desktop
Mobile
The digital front door of an audiology clinic. Patients discover the ...
YMG Consultancy
Yanet Gallina
Landing
Desktop
Mobile
Driving culinary innovation through strategic consultancy and powerful...
CSA360
Archon Tech Strategies
Platform
API
Desktop
Mobile
All-in-one physical security operations management software. CSA360 s...
DeeJS
Tooling
Desktop
Mobile
Open Source
A complete DJ application for mixing music right in the browser. Twin...
Code Compiler
Tooling
Desktop
Write, compile and run code in 40+ languages from a single online edit...
ML Self-Driving
Gaming
Case Study
Desktop
A self-driving car simulation powered by machine learning, in plain Ja...
HTML to MD Converter
Volvo Cars
Tooling
Open Source
A Python service that turns Confluence pages into clean Markdown. It ...
Image & Video Compressor
Tooling
Open Source
Batch compression that shrinks media files by up to 70% with barely vi...
Confluence Dark Mode
Chrome
Tooling
Open Source
A Chrome extension that finally brings dark mode to Confluence. Caref...
Page2PDF
Chrome
Tooling
Open Source
Convert any webpage into a PDF with a single click. A lightweight Chr...
Lights Off
Chrome
Tooling
Open Source
One switch to bring darkness to the entire web. Born from the success...
E.A.S.Y Notes
Tooling
Case Study
Mobile
A simple mobile app to follow and note your baby's daily rhythm. Insp...
Flying Game
Gaming
Case Study
Desktop
Take the controls of an aeroplane in this Three.js flight simulation. ...
SQLite Search Engine
Volvo Cars
Tooling
Open Source
A full-text search engine built on SQLite, dramatically faster than fr...
Space Punks
Gaming
Case Study
Desktop
An infinite battle against enemy spaceships, in the spirit of the grea...
Magis Hogar Home
Magis Hogar
Landing
Desktop
A landing page and client platform for everyday real-estate investment...
Canvas Shooting
Gaming
Case Study
Desktop
An intense shooting game built with canvas and vanilla JavaScript. Th...
Pytorch Training
Case Study
A hands-on study of the full machine-learning workflow with PyTorch. ...
Boxy
Gaming
Case Study
Desktop
A fun, minimal 3D game built with Three.js. Chosen as a first expedit...
Get in touch
Whether it's a project, an idea, feedback on the newsletter, or just to say hi, I read everything.
The simplest way to reach me is at guille.sotelo.cloud@gmail.com. I usually reply within a day or two.
Elsewhere
You can also find me and my work here:
Thanks for reading this far. Talk soon.
Guillermo Sotelo © 2026