boreal.chat — Fast, Offline-First, and Open AI Conversations
Jul 20, 2025
An open-source, offline-first AI chat platform that synchronizes seamlessly across devices — built out of frustration with slow, limited, and centralized AI apps.
About me
I'm a full-stack engineer and co-founder of Nexi Health, where I lead technology and build AI tools for mental healthcare. Self-taught since my teens, I've spent over six years building production software across freelance projects and startups. I enjoy solving difficult problems and understanding the systems behind the products I build.
Work Experience
Co-founder & CTO
Nexi HealthSeptember 2025 - Present
- Co-founded a mental health technology startup and lead its engineering and technical strategy.
- Build AI tools that help professionals diagnose, treat, and follow up with patients.
- Completed the Lanzadera acceleration program in July 2026.
Full-stack Engineer
Noloco (YC S21)December 2024 - December 2025
- Delivered 500+ production tasks in a single year, across frontend, backend, and infrastructure.
- Led migrations to React 18 and react-router v6, improving code maintainability and performance.
- Rebuilt the app builder experience and project components, with reusable UI components focused on UX and speed.
- Leveraged tools like Storybook to improve cross-team collaboration and test UI changes more efficiently.
Founder & Developer
Independent projectsOctober 2023 - June 2025
- Built boreal.chat v2, a decentralized AI chat platform with encrypted, offline-first synchronization across devices.
- Created programming tutorials on YouTube, reaching more than 40,000 subscribers.
Full-stack Engineer
Freelancing
August 2019 - October 2023
- Collaborated with high-profile influencers on complex projects, providing customized software solutions to meet their needs
- Delivered high-quality work on time, maintaining excellent communication and attention to detail, while learning and gathering experience in the process.
Languages
English: Business Level - C1 Advanced (190 score)
Euskera (Basque): Basic
Español (Spanish): Native
Català (Catalan): Native
Education
Self-taught software development
Independent learning · 2019 - Present
Continuous learning in full-stack engineering, systems design, and DevOps.
ThePowerMBA Program
thePower · September 2023 - August 2024
Business administration and management.
Computer Science studies
Universitat Politècnica de Catalunya (UPC) · 2023
Programming, algorithms, data structures, and software development.
Technology-focused Baccalaureate
Maristes Rubí · September 2021 - June 2023
Science and technology, including computer science and electronics.
Certifications & Programs
- Agents Course — Hugging Face (July 2026)
- AI Fluency: Framework & Foundations — Anthropic (June 2026)
- Claude Code in Action, Claude Code 101, and Claude with Amazon Bedrock — Anthropic (June 2026)
- Introduction to Large Language Models — Google (June 2026)
- LLM Course — Hugging Face (June 2026)
- B-Venture Training Startups — Deusto Emprende (April 2026)
- Getting Started with OpenTofu — The Linux Foundation (December 2025)
- Lanzadera Acceleration Program — Lanzadera (September 2025 - July 2026)
- LangChain Academy: Deep Agents & AI Workflows — LangChain (December 2024)
Achievements
- Cambridge C1 Advanced English certificate, earned through self-study (score: 190).
- 4th place at HP CodeWars Barcelona 2023 as lead developer of the MRA team.
Personal Projects
ClearerBot — 25,000 Servers, ~250 WAU
Jan 1, 2023
A high-impact Discord bot that helps thousands of communities stay clean, organised and spam-free. I led its design, development and deployment.
How I coded a Twitch Rivals event - SquidCraftGames, a $100,000 Twitch Rivals tournament
Jan 20, 2022
Biggest Twitch Rivals Tournament at the time, averaging 2M+ viewers and a $100,000 prize. A total coding challenge, including Game Mechanics, Voice Chat, Backend, and Infrastructure.
StickyBot — The WhatsApp Sticker Revolution
Aug 5, 2021
Scaled a WhatsApp sticker-generation bot to 50,000 users in two weeks using a Kubernetes-based microservices architecture — before being shut down by Meta.