Ethics & Humanism
Responsible AI
Transparent, explainable models oriented toward bias mitigation. Human-centered technology.
Software Craftsman · Cyberpunk · CTO
Xavier Vinaixa
High Tech Low Life
AI from humanism and ethics
CTO at Sorensen.ai · Barcelona
55M+
Downloads
~20
Years exp.
855K+
PyPI Installs
17
Substack Articles
// 01 About
Building technology for people
Software craftsman and artificial intelligence specialist with a humanist and ethical vision. Nearly two decades creating and scaling digital products — from mobile apps with 55 million downloads to immersive virtual reality projectors for hospitals.
Currently leading AI research at Sorensen.ai, where I serve as technical lead of Signària — an EU-funded project (Next Generation EU) to create personalized radio sonic identity for deaf sign language users, led by UPF.
Public television contributor (Badalona 360). Creator of python-toon — the reference Python library for TOON with 855K+ installs — and collaborator on TOON Format with its own Wikipedia page. President of Opendata.cat and creator of the Opendata.cat MCP server — connecting any AI with 2,850+ public datasets. Author of academic papers on LLM hallucination, literary style fine-tuning and personalized sonic identity for deaf signers (XVII CILCS 2025).
Art & Music
Artistic creation
Bass player in LLAMP (EP Claredat 2023), The Singletons (200K+ listens), Elite Funk (EP 2012), DeMortimers and Ateneuats Band (jazz). Creator of a musical instrument built with floppy drives and MIDI.Co-founder of LOVYU — immersive AI art installation (600+ visitors). Lighting consultant for Reflexes by ESDi at Llum BCN. Collaborator on the Estimat Alvar exhibition (tribute to Álvar Suñol).Co-creator and developer of FestaFoto — first rapid mobile photography contest in Tiana (2011). First remote immersive concert without headsets at Sónar during lockdown, using BROOMX's live 360 system.
Human Factor
Beyond code
SUP competitor at CN Bétulo. 3rd in Catalonia indoor rowing 2023 with REM Premià. Co-founder of 8rems.com — the reference platform for Catalan llagut leisure rowing with 10+ years of activity.Gold Medal at BCN Beer Fest with Brew by Code. President of ABAT (Craft beer association of Tiana). Founder of the Cervesers.cat cooperative.Cooking channel created during COVID (200+ subscribers, videos with 30K+ views). President of Opendata.cat (Open data advocacy association).Devil dancer for 20 years in the Trempera Nostramo fire-running troupe (Tiana).
Outreach
TV, radio & newsletter
Monthly contributor on TV Badalona 360 and Radio Ciutat de Badalona. Catalan-language newsletter on AI and humanism. xaviviro.substack.com
// Sorensen.ai
Sorensen.ai — AI for Culture and Accessibility
As CTO, I lead AI research applied to media, culture, and the arts. The goal: turning AI into accessible tools — summaries, easy-to-read versions, sign language translations, and real-time subtitles. Creator of Larsson.ai — AI assistant for journalists and content creators.
EU Funded · Next Generation EU · UPF
Signària
Project funded by Next Generation EU and led by UPF to create personalized radio sonic identity for deaf sign language users. A unique, personal synthetic voice — not generic — that represents each person's identity in radio and podcasting. Hybrid architecture combining symbolic NLP with Neural TTS and LSC processing.
AIAccessibilityNLPVoice SynthesisLSCEU
Sorensen.ai · AI for Journalism
Larsson.ai
AI assistant for journalists and content creators. Content creation, automated podcasts with voice synthesis, multilingual video dubbing, SEO/AEO/SMO optimization and multilingual transcription. Private servers, efficient models and native Catalan, Basque and Galician support.
AIJournalismNLPVoice SynthesisSEO/AEOCatalan
// 02 Projects
Innovation with impact
Every project with verifiable references.
MCP · AI · Open Data
Opendata.cat MCP Server
Creator · President of Opendata.cat · 2026
The weapon against black boxes: an open MCP (Model Context Protocol) server that connects any language model — from a local open-weights LLM to ChatGPT, Claude or Gemini — with 2,850+ datasets from 1,000+ municipalities and state agencies (Generalitat, Barcelona City Council, Barcelona Provincial Council, AOC Consortium, INE, REE, CNMC, Rodalies, FGC…). Built so you can interrogate reality directly without ideological filters: the cheapest gas station, the best hour to run a washing machine, reservoir levels during a drought, real-time Rodalies or FGC delays. Every answer carries a traceability chain — dataset, last update, originating institution — to dismantle hallucinations. Inspired by the French datagouv-mcp, but designed to understand the Catalan territory. npm package compatible with Claude Desktop, Claude Code, VS Code, and Cursor. An Opendata.cat project (Open Data Promotion Association).
MCP AI Open Data LLM Node.js Data Sovereignty
AI · LLM · Data Format
python-toon / TOON Format
Creator of python-toon · TOON Collaborator · 2025
Creator of python-toon, the reference Python library for TOON (Token-Oriented Object Notation) with 855K+ installs on PyPI — open data format reducing LLM tokens by 30-60%. De facto standard for efficient data serialisation in LLM environments. Collaborator on the official project. Wikipedia page, coverage in InfoQ, freeCodeCamp, Analytics Vidhya, and Hacker News.
AI LLM Data Format TypeScript Python
LLM · Fine-tuning · Catalan
FLAMA & SUGARRA
Creator · 2023–2024
FLAMA — first small model to speak Catalan (Llama 3B fine-tune, 2023). SUGARRA — first small model in Basque (Llama 3B fine-tune, 2024). Creator of the FEDERICO-GARCIA-LORCA dataset (songs, poems, and ballads). LoRAs published on CivitAI, including CyberNeon FLUX (1.2K favs).
LLM Fine-tuning Catalan Basque LoRA
GANs · Diffusion · Python
Refacer
Creator · Open Source
One-click multiple face swap in video. Built on GANs and diffusion models. GitHub: Pair Extraordinaire, Pull Shark.
VR · MedTech · Hardware
BROOMX Technologies
Co-founder & CTO
First immersive VR projector for hospitals. Real-time projection mapping, spatial sensors, geometric correction to prevent cybersickness. Selected for the Abbey Road Red incubator (London) to explore immersive audio and spatial audio techniques.
VR MedTech Hardware 3D Spatial Audio
IoT · Open Source · Sensors
Smart Citizen
Architect & Developer · Fab Lab Barcelona (IAAC) · Since 2012
Designed the architecture and built the first version of the platform and the first iOS app. Open-source citizen environmental sensor platform deployed in Barcelona, Amsterdam, and Manchester with partners like Cisco and Intel. Referenced on DATA.GOV (US). Deployed a sensor network in Tiana (2020-2021).
IoT Open Source Sensors Open Data
Open Data · Data Visualisation · Tailwind CSS
Vehicles Catalunya
Creator · Opendata.cat · 2026
Open data platform with 1M+ vehicle registrations across Catalonia (2020–2026). Interactive visualisations by municipality, manufacturer, fuel type, CO₂ emissions, and electrification trends. Data sourced from DGT and the Catalan Government Transparency Portal. An Opendata.cat project (Open Data Promotion Association).
Open Data Data Visualisation Tailwind CSS Chart.js OpenStreetMap
Open Data · Data Visualisation · Chart.js
Bike Lanes Catalunya
Creator · Opendata.cat · 2026
Open data platform mapping Catalonia's bike lane network. 2,370 km mapped across 327 municipalities. Interactive map, rankings by kilometres and per capita, municipal comparisons. Data from OpenStreetMap, Open Data BCN, and Generalitat de Catalunya. An Opendata.cat project.
Open Data Data Visualisation Chart.js Leaflet OpenStreetMap
AI Art · Generative · Installation
LOVYU
Co-founder · 2024
Immersive AI art installation simulating Mario Tarragó's painting style to generate 'soul portraits'. 600+ visitors, ~360 portraits generated.
AI Art Generative Installation
Music Tech · Hardware · MIDI
Floppy Music
Creator
Musical instrument built with floppy disk drives controlled via MIDI. The drives generate musical notes through stepper motor head movements.
Music Tech Hardware MIDI DIY
Music Tech · Hardware · IoT
Oval Sound
Lead Developer · 2014
World's first digital handpan. Electronic instrument with multi-gesture sensors, Bluetooth, and MIDI. €348K raised on Kickstarter with 680 backers.
Music Tech Hardware IoT Kickstarter
AI · Music · NLP
KaraokeIt
Creator · 2020
AI-powered lyrics aligner for karaoke. YouTube channel with 900+ subscribers and videos with 40K+ views.
AI Music NLP Forced Alignment
Streaming · Platform · COVID
LiveCeremony360
Co-creator · 2020
Streaming platform for ceremonies and funerals during COVID, integrated into Complementos Funerarios. Enabled families to remotely attend live ceremonies when restrictions prevented physical presence.
Streaming Platform COVID Social Impact
VR · Open Source · Art
Real Virtuality
Developer · Gabriel Lecup / Hangar BCN
Open source VR app to explore altered states of consciousness with eyes closed. Combines flickering lights and binaural beats to induce lucid dreams, trances, and hallucinations through brainwave synchronisation (FFR). Produced with the collaboration of Hangar — Interaction Lab.
VR Open Source Art Neuroscience
Sports · Community · Platform
8rems.com
Co-founder · Since 2014
Reference web platform for promoting and organising fixed-seat rowing events with Catalan llagut boats in leisure format. Meeting point for rowers, organisers, and enthusiasts with 10+ years of activity.
Sports Community Platform Rowing
WhisperX · Axolotl · llama.cpp
Open Source Contributions
Contributor
WhisperX (forced alignment, diarization). Axolotl (LoRA training). llama-cpp-python (local quantized model execution).
WhisperX Axolotl llama.cpp
// 03 Career
Two decades of impact
2023 — Present
Chief Technology Officer
Leading AI research for accessibility. Signària, real-time computer vision, NLP, sign language translation.
2018 — 2023
Co-founder & CTO
Immersive VR projector for MedTech. Projection mapping, geometric correction, spatial sensors.
2015 — Present
Co-founder & CTO
Connectivity services management and scalability platform.
2012 — Present
Founder & Tech Lead
IOAPPS
40+ apps, 55M+ downloads. Distributed systems, massive concurrency, payment gateways.
2005 — 2012
IT Department
Ajuntament de Badalona
First open data portal of a Spanish municipality. BDN Bústia: first app for citizens to report public road incidents to city council with tracking.
// 04 Media & Press
Outreach and coverage
Newsletter
Substack in Catalan
Exploring how to maintain human purpose. AI critique, algorithmic ethics, techno-feudalism, death of the author.
- Una altra IA és possible: Signària guanya el premi de la Ràdio Associació de Catalunya 2026
- El que ens cal construir és un pensament tecnològic post-europeu
- L'arma contra les caixes negres: interroga la realitat sense intermediaris
- El veritable origen de la diada de Sant Jordi que cap IA et sabrà explicar
- Algoritmes sense ànima per a programadors sense ofici
- Terraplanisme de dades i cinisme institucional: el doble biaix del cas Menjòmetre
- Sord sí, mut mai: no us sentiu culpables, informeu-vos i canvieu-ho
- Signària: sobirania digital i ràdio inclusiva
- 8M: l'aliança silenciosa
- High tech, low life: la resistència cíborg contra el tecnofeixisme
- La intel·ligència de la IA només és el reflex de la teva
- El càlcul energètic de la misantropia
- L'algoritme està buit i nosaltres també
- Diumenge vaig fer el ridícul: el dia que l'algoritme em va donar el que volia veure
- La mort de l'autor i l'al·lucinació de la màquina
- L'elogi del 'glitch': i si l'al·lucinació fos la creativitat de la màquina?
- No, l'escala no és tot el que necessites
Subscribe to the newsletter
xaviviro.substack.comTV · Sign Language
3Cat — A pioneering tool enables deaf signers to do radio
TV3 report on Signària: a pioneering tool created by UPF and Sorensen.ai that enables deaf signers to participate in radio with a personalized synthetic voice.
04/04/2026 · 2 min 15 s
Radio
Catalunya Ràdio — Popap with Mariola Dinarès
"A true problem solver" — From creating an app to win at Apalabrados to developing an immersive VR projector with entertainment, educational, and medical applications.
15/03/2022 · 23 min
Radio
RTVE — L'Entrellat with Rosa Pera
Masterclass on artificial intelligence on L'Entrellat, Ràdio 4 (RTVE). Conversation with Rosa Pera about the present and future of AI.
RTVE · Ràdio 4
Apps · Coverage
Pregunticas — The Corruption Trivia Game
Multiplayer trivia with 60,000+ questions in 22+ categories, including the infamous "Corruption/Spain". 7,000+ downloads at launch. Co-created with Sergi Solé. Covered by Voz Libre, Applicantes, 3Cat/TV3.
Talks & Workshops
Talks, lectures and workshops
Participation in forums, conferences and workshops on AI, open data, tech ethics and social impact.
Fòrum TIC Social Llefià 2024 Fòrum TIC Social (programa) NODE Garraf — IA i Turisme Hangar BCN — AIAIAI Taller d'IA a Tiana Taller Open Data Llengües minoritàries i IA · Vielha CoDi 2026 · Divulgació i impacte social InnBrew 2021 · Comunicació i digitalització cervesera Podcast Emerge 23 · IA en videojocs (Spotify) Podcast Emerge 23 · IA en videojocs (Podimo) Signària — Congressos acadèmics
Social Media
Reels — AI Opinion
Short-form reflections on tech news and AI from a critical, humanist perspective. On the @wearesorensen Instagram account.
Vibe coding: do we still need programmers?
Apr 2025 5.2K 131
Do you thank your coffee machine?
May 2025 4.8K 104
Not all AI is Google
Jun 2025 6.1K 138
Does your toothbrush need AI?
Jun 2025 5.5K 133
Do we need an AI-generated minister?
Sep 2025 4.3K 100
P*rn comes to ChatGPT: age control
Oct 2025 3.8K 82
Public TV
Badalona 360 Appearances
Regular contributor on public television explaining AI, ChatGPT, foundational models, and tech ethics to the general public.
YouTube PlaylistPress
Media coverage
Articles in reference publications — from TOON Format coverage in InfoQ and freeCodeCamp, to interviews on Catalunya Ràdio, El Español, and VIA Empresa.
VIA Empresa VIA Empresa (II) InfoQ freeCodeCamp El Español El Español (II) Catalunya Ràdio 3Cat/TV3 Voz Libre Línia Xarxa (LOVYU) BDN Com (LOVYU) Tiana.cat (LOVYU) La Local (LOVYU al Festival of Consciousness) DEV Community Territorimac (PrivateMSG) El Periódico de Extremadura (PrivateMSG) Diario de León (PrivateMSG) La Vanguardia (PrivateMSG) TuExpertoApps Analytics Vidhya Wikipedia Hacker News RTVE / Ràdio 4 La Local (Xatbot electoral) La Local (Sensors ambientals) La Local (Qualitat de l'aire) La Local (Coronavirus Trivial) La Local (BrewByCode) La Local (Hotel 4D / BROOMX) La Local (De Badalona a Las Vegas) Cuatro XEU.cat (Opendata.cat) El País La Vanguardia (Apalabrados, ca) La Vanguardia (Apalabrados, es) La Vanguardia (Pregunticas) La Vanguardia (COVID) Antena 3 El Confidencial 20 Minutos Europa Press La Razón El Periódico El Economista (COVID) El Economista (Corruptopolis) OK Diario Heraldo TeleCinco La Voz de Galicia El Punt Avui Segre El Nacional Diario de Navarra Llibertat.cat El Mundo (BROOMX) Fundación Telefónica (BROOMX) La Vanguardia (BROOMX) El Periódico (BROOMX) The New Barcelona Post Hospitecnia (BROOMX, PDF) Hospitecnia (BROOMX, article) Entrevista CTO BROOMX (YouTube) TeleB — 4YFN 2017 Enderrock / Sona9 (LLAMP) Abbey Road Music Week VilaWeb (Open Data) Tiana't (perfil, Rafa Burgos) betevé (Signària) ARA (Signària) ACN (Signària) UPF Focus (Signària) El País (Signària) Paréntesis (Signària) BDN Com (Signària) Badalona Digital (Signària) Comunicació21 (Signària) Diari de la Discapacitat (Signària) Al Dia (Signària) Minoria Absoluta (Signària) VIA Empresa (Signària) TeleCinco (Signària) La Local (Signària) Guía de la Radio (Signària) Jornal.cat (Signària) Sant Feliu al Dia (Signària) Línia Xarxa (Signària) VilaWeb (Signària) 3Cat (Signària)
// 05 Contact
Let's connect
Available for advisory, keynotes, technical collaborations, and social impact projects.