# Afonso Raposo

> Afonso Raposo: software engineer in Lisbon who would rather build it himself. Projects, writing, research, and life off-screen.


Software engineer at Paddle, Lisbon. Biomedical engineer by training.


Every page is also available as Markdown at its URL + `index.md`.

## Projects

- [Visto](https://afonsoraposo.com/projects/visto/index.md): Track what I watch without handing my viewing history to someone else’s service.
- [Flit](https://afonsoraposo.com/projects/flit/index.md): ⌘-Tab through the apps, then hunt for the right window.
- [Seek](https://afonsoraposo.com/projects/seek/index.md): A playful team-building game that gets people moving and meeting in real life: scan someone’s badge, say hi, get your next one.
- [Paddlecards](https://afonsoraposo.com/projects/paddlemon/index.md): With 200+ people at my first company kick-off, it was hard to meet anyone outside my own department.
- [Houdin](https://afonsoraposo.com/projects/houdin/index.md): Browser automation that feels like magic: a browser extension with a drag-and-drop workflow designer.
- [Palavra](https://afonsoraposo.com/projects/palavra/index.md): I wanted to see how far a LaTeX editor could go with no backend at all.
- [QReate.dev](https://afonsoraposo.com/projects/qreate.dev/index.md): A seller at the Lisbon Vegan Market told a customer their QR code had *expired*. QR codes don't expire.
- [Postmark Exporter](https://afonsoraposo.com/projects/postmark-exporter/index.md): Postmark only exports 500 records at a time, and during an incident we needed all the hard bounces.
- [Traker](https://afonsoraposo.com/projects/traker/index.md): I wanted to log small recurring things in my life: laundry, haircuts, my cats' weight.
- [Alfred GHRepos Workflow](https://afonsoraposo.com/projects/alfred-ghrepos/index.md): Alfred workflow to fzf your GH repos
- [Semana da Bioengenharia Flutter app](https://afonsoraposo.com/projects/sbe/index.md): Official app for the Semana da Bioengenharia at IST
- [Sense Web](https://afonsoraposo.com/projects/sense-web/index.md): PWA using Vue.js that allows the acquisition of biosignals signals using a ScientISST Sense device and serial-based devices (e.g. Arduino)
- [ScientISST Sense Python API](https://afonsoraposo.com/projects/sense-api/index.md): The ScientISST SENSE Python API
- [snakes.js](https://afonsoraposo.com/projects/snake-js/index.md): My girlfriend challenged me to build a whole game while she napped after lunch.
- [Flutter Icon Finder](https://afonsoraposo.com/projects/flutter-icon-finder/index.md): Are you looking for a specific icon in Flutter? I’ll help you!
- [e-CoVig](https://afonsoraposo.com/projects/ecovig/index.md): Automated COVID-19 symptomatology remote monitoring mobile application
- [BITalino Flutter plugin](https://afonsoraposo.com/projects/bitalino/index.md): BITalino plugin for Flutter that allows the interaction with BITalino devices.
- [TEDxULisboa](https://afonsoraposo.com/projects/tedxulisboa/index.md): Official app for the TEDxULisboa event
- [Buttons TabBar](https://afonsoraposo.com/projects/buttons-tabbar/index.md): A Flutter package that implements a TabBar where each label is a toggle button
- [PPG](https://afonsoraposo.com/projects/ppg/index.md): An app that measures your heart rate with the phone’s camera and flash. Built with Flutter.
- [Chicken Evolution](https://afonsoraposo.com/projects/chicken-evolution/index.md): Implementation of a genetic algorithm in Unity using chickens
- [Genetic Neural Network Flappy Bird](https://afonsoraposo.com/projects/genetic-nn-flappy/index.md): Genetic algorithm coupled with neural networks to play Flappy Bird

## Writing

- [Paddlecards: 70% of our company played the game I built as a side project](https://afonsoraposo.com/posts/2026-02-26-paddlecards/index.md): How a message to our CEO turned into 3D-printed NFC badges, an AI-drawn Paddleverse and a kick-off game most of Paddle played.
- [Traker: the power of API-first and automation](https://afonsoraposo.com/posts/2025-09-14-traker-nfc/index.md): Discover how you can leverage the API-first approach of Traker to automate event tracking: create a iOS shortcut to log events after tapping a NFC tag.
- [Learnings of my latest project, Traker](https://afonsoraposo.com/posts/2025-09-09-traker/index.md): A reflection on the learnings from building Traker, a personal tracking tool. Covers tech stack choices, challenges faced, and what I learned in the process.
- [Upgrading the Creality Sermoon V1 3D printer](https://afonsoraposo.com/posts/sermoon-v1-upgrade/index.md): Installing Klipper, Moonranker, Fluidd, and CR Touch on the Creality Sermoon V1 3D printer
- [Running Debian Linux on MK808 Android Mini TV](https://afonsoraposo.com/posts/mk808/index.md): Here’s my journey of installing Debian 8 (Jessie) with XFCE on the MK808 Android Mini TV
- [Measuring Your Heart Rate Using Your Phone’s Camera and Flutter](https://afonsoraposo.com/posts/ppg/index.md): Build a mobile heart-rate monitor that works without the need to wear any devices
- [Flutter: How to Save Objects in SharedPreferences](https://afonsoraposo.com/posts/sharedpref/index.md): Save custom objects in Flutter by encoding them to JSON and storing them in SharedPreferences.

## Publications

- [Ultrasound Despeckling With GANs and Cross Modality Transfer Learning](https://afonsoraposo.com/publications/usgan/index.md): Diogo F. Vieira, Afonso Raposo, António Azeitona, Manya V. Afonso, Luís  M. Pedro, João Sanches
- [Smartphone Pulse Oximetry Using Two-tone Camera-based Photoplethysmography](https://afonsoraposo.com/publications/cbspo2/index.md): Afonso Raposo, Rafael Silva, Luís Brás Rosário, João Sanches, Hugo Plácido da Silva
- [AI-Based mHealth App for Covid-19 or Cardiac Diseases Diagnosis and Prognosis](https://afonsoraposo.com/publications/mhealth/index.md): Ana Vieira, Luís B Elvas, João C Ferreira, Matilde Cascalho, Afonso Raposo, Miguel Sales Dias, Luís Brás Rosário, Hugo Plácido da Silva
- [Ultrasound denoising using the pix2pix GAN](https://afonsoraposo.com/publications/recpad-usgan/index.md): Afonso Raposo, António Azeitona, Manya Afonso, João Sanches
- [Low-Cost Pulse Oximetry and Infra-Red Temperature Device for COVID-19 Patients](https://afonsoraposo.com/publications/recpad-ecovig/index.md): Afonso Raposo, Francisco Melo, João Sanches, Hugo Plácido da Silva
- [Camera-based Photoplethysmography (cbPPG) using smartphone rear and frontal cameras: an experimental study](https://afonsoraposo.com/publications/cbppg/index.md): Afonso Raposo, Hugo Plácido da Silva, João Sanches
- [e-CoVig: A Novel mHealth System for Remote Monitoring of Symptoms in COVID-19](https://afonsoraposo.com/publications/ecovig/index.md): Afonso Raposo, Luís Marques, Rafael Correia, Francisco Melo, João Valente, Telmo Pereira, Luis Brás Rosário, Filipe Froes, João Sanches, Hugo Plácido da Silva

## Other
- [About](https://afonsoraposo.com/about/index.md): who I am, and life away from the keyboard
- [User manual](https://afonsoraposo.com/manual/index.md): how I work best
- [CV](https://afonsoraposo.com/cv/index.md) ([PDF](https://afonsoraposo.com/pdf/CV_Afonso_Raposo.pdf))
- Contact: afonsocraposo@gmail.com, https://github.com/afonsocraposo, https://linkedin.com/in/afonso-raposo