Luis Fagundes

RxDjango is a framework that optimizes the tradeoff between scalability and fast shipping for real-time applications.

It provides a reusable foundation for keeping Django back ends and React front ends synchronized, so users see data updates instantly without the usual amount of custom integration work. By combining real-time communication, automatic front-end code generation, and a structured state model, RxDjango reduces boilerplate, cuts integration bugs, and speeds up delivery of dashboards, operational platforms, and other data-intensive products.

It also implements a robust caching system. It combines Redis and MongoDB to synchronize concurrent clients racing for non-cached resources. It also optimizes cache invalidation by slicing nested state into individual instances, which are automatically reassembled in the front end.

It was released under the MIT License.

MOD Devices is a Linux-based audio processor for musicians, hosting LV2 plugins on stage. Joining the company in Brazil in 2012, I proposed managing the device through the browser and built the original platform that made the idea real: an embedded Python/Tornado web stack inside the device, a full HTML5/jQuery pedalboard editor with drag-and-drop plugin routing, and a real-time communication path between the audio host and the browser implemented with technology available in 2013.

I also created the LV2 MOD GUI extension, an open standard letting third-party developers ship HTML-based interfaces for their audio plugins. That browser-first architecture became the hinge between embedded devices, user experience, and the cloud, enabling remote plugin installation, pedalboard sharing, and firmware updates even when the device itself was not directly connected to the internet.

Beyond engineering, I helped build the company in Brazil from 2012 to 2015 and presented the web GUI standard at the Linux Audio Conference in 2015.

The code was released under GPL at https://github.com/mod-audio/.

This project harnesses the convenience and power of online real-time collaborative interfaces and tailors them to a specific niche: Pipeline Pigging. At its core, the project integrates a complex and singular business logic that demands utmost consistency, couples it with a low-latency data flow from IoT devices to the browser, and encapsulates everything within an elegant user experience.

This project was the media orchestration system behind the Barclays facade in Times Square: a large-format public video installation that had to run continuously, delivering 10K-resolution content to screen 24/7. It sat between the CMS, rendering pipeline, network storage, and playback machines, making sure scheduled content, previews, and live updates were processed and delivered reliably in a high-visibility production environment.

The technical challenge was keeping a complex asynchronous pipeline correct under constant pressure. Large video files had to be rendered, transferred, verified, and promoted safely without exposing partial outputs; rapidly changing schedules had to stay synchronized with slower render and copy stages; and the system had to recover from stale data, duplicate events, stalled players, and storage churn without interrupting playback.

The result was a fault-tolerant orchestration layer built for time-to-screen, integrity, and operational resilience in a live 24/7 deployment.

Solid Node is an open-source framework that represents mechanical projects as software and bridges the gap between mechanical and software engineering. It uses FastAPI, React, TypeScript, and Three.js to unify modeling-by-code technologies such as OpenSCAD, CadQuery, JSCAD, and SolidPython2 into a single interactive workflow.

The framework is built around a node-based architecture for composing parts, assemblies, transformations, and rendering pipelines across multiple geometry backends. This allows different modeling tools to work within one consistent project structure while supporting automated builds, browser-based inspection, and geometry-aware testing.

By applying web-platform thinking to a fragmented technical space, solid-node turns programmable mechanical design into a more structured, reusable, and collaborative software workflow.

Available under AGPLv3 - transitioning to MIT.

A platform for researchers from the GPOPAI group at the University of Sao Paulo to monitor the online political debate on social media and acquire data for their research. I was responsible for tweaking the web scraper and creating and implementing a UI for researchers to make sense of data.