Hi there! 👋
I'm Marc
Entrepreneur &
Software Developer
I build everything from web and mobile apps to cloud solutions and AI tools. I handle projects from concept to completion, combining full stack expertise with an entrepreneurial mindset.
Solsona, CataloniaAbout / 01
Built from curiosity.
I'm Marc Pujol Gualdo, and I build software from curiosity. I've founded three companies and launched 50+ side projects, some acquired along the way.
Technical skills
Built with →
JavaScript
TypeScript
Node.js
HTML5
CSS3
Tailwind
React
Next.js
Python
Angular
Firebase
Google Cloud
Amazon Web Services
Swift
StripeExperience
My Journey So Far
A chronology of the companies I've built, joined and collaborated with.
Projects / 42
Selected Work
I can't show you every project I've worked on, but here's a taste. Over 50+ side projects and counting!
01WattChat
Control your Tesla through natural conversation instead of standard commands. Just voice or type what you want, and the AI makes it happen. Your car becomes a true companion, not just a vehicle.

Control your Tesla through natural conversation instead of standard commands. Just voice or type what you want, and the AI makes it happen. Your car becomes a true companion, not just a vehicle.

Digital services and physical products for rural stays, designed to drive more direct bookings, simplify day-to-day management, and improve every guest experience.

Combat the world's most widespread pollution with SmartButt. Use AI to detect, track, and reward responsible cigarette butt disposal.

A dedicated management platform for tourist and rural accommodation businesses, centralizing reservations, calendar sync, guest check-in, legal documents, invoicing, accounting, and performance analytics.

A modern, welcoming website for a dental clinic in Puerto de Mazarrón, presenting its treatments, team, facilities, and appointment booking journey.

A visual website for a family garden centre in Mazarrón, showcasing its plants, gardening services, history, and 360º virtual tour.

A refined real estate advisory website for presenting international investment opportunities, projects, locations, and the team behind them.

A bold website for a dog grooming salon in Puerto de Mazarrón, highlighting its services, experience, facilities, and appointment options.

A clear conversion-focused website for modern storage units in Cartagena, with size options, virtual tour, location details, and contact paths.

Automates real estate listing tasks that typically take 6 hours down to just seconds. Agencies get massive productivity gains through AI-powered automation.

A collaborative map where users rate how well businesses serve customers in Catalan — helping highlight language-friendly places and encourage linguistic inclusion.
Create AI-powered avatars from just 10 photos. Works for individuals, couples, and even pets. Built when training personal AI models wasn't accessible to non-technical users.

When my favorite band Manel announced their breakup, I built this. Tell it about your personality and AI matches you to the Manel song that represents you, with lyrics explanation included.

Upload 10 photos of a child and get a custom story where they're the protagonist. The kids' reactions make it all worthwhile.

One platform for multiple AI services—image generation, text creation, resolution enhancement, and more. Built to make AI tools accessible without technical knowledge.

Turn yourself into the main character of traditional Catalan stories. Our Sant Jordi project went viral and got interviewed by TV3, Catalunya RÃ dio and others.

I manage a rural house in Catalonia and wanted full control over the booking experience. Built a custom website with direct reservations, availability calendar, and property showcase—no commission fees to booking platforms.

Over 10,000 video clips from the best TV show ever made. Watch 10-second clips, guess which episode it's from, compete on the leaderboard.

When COVID prevented physical meetups on Catalonia's rose-giving day, I built this. Create 360º 3D virtual roses with photos and voice notes. Over 50,000 roses sent so far.

Tool for Google 360º photographers to create, edit, and upload virtual tours to Street View. Better analytics and cheaper than alternatives. Led me to co-found GURU TECH VR SL as CTO.

Year-long Baccalaureat project at 16. Built software for dynamic virtual tours where users can make restaurant reservations, book hotels, fill forms, and view multimedia—all while navigating the space. Won an award from VIC University.

Found a security flaw in the 2017 Catalan referendum site: the entire encrypted census was accessible. Built a tool proving you could decrypt individual birth dates. It felt risky at first, but I disclosed it responsibly to highlight the importance of data security.
Mobile app that tracks geolocation continuously. Web interface lets you monitor the phone's position with Street View imagery—see through someone's eyes without extra hardware.

Valentine's Day 2022 project. Generate AI love poems based on names and hobbies, plus create romantic avatars from selfies. Romance meets cutting-edge AI.

Just got my license at 18, wanted to drive friends around, but gas was expensive. Built a cost estimator that factors in weight, A/C, and consumption to split costs fairly.
Work with me / Open
Let's work together.
A few examples of how I can help. The right solution starts with what your business needs.
Have a challenge in mind?
Tell me about your projectMedia / Archive
Press & Appearances
Featured in various media outlets for my work in AI, innovation, and technology.
2023TV3 - 3CatTV Interview about an AI project for personalized stories
2023MetadataPress interview about my contribution to DALL·E supporting Catalan
2023Espai.mediaTraditional Sant Jordi stories created by artificial intelligence
2023Solsona FMSolsonà Marc Pujol and the Protagonista.cat project
2023Catalunya RÃ dioPopap - Interview to my work partner Sergi about an AI project
2023Diari de TerrassaChatGPT and Sant Jordi: personalized stories with AI
2023Món TerrassaTraditional stories personalized with artificial intelligence
2019ElectrekTeslastics: Tesla companion app to track use & battery health
2019Pásate a lo eléctricoEP33 - Todo lo que no sabias de tu Tesla | Entrevista a Marc Pujol (Teslastics)
2023SolsciènciaAutumn Science - Innovació KM0
2015AcámicaSoftware development: my new lifestyle
2017Vic UniversityVic University award for my high school project
2024Cadena SERInterview discussing financial literacy and investing habits among young people
Beyond work / 02
Hobbies & Interests
The things I explore after the screen goes dark — where technology, movement and energy become tangible.
Tesla & Autonomous Driving
Passionate about electric vehicles and the future of autonomous driving. In 2020, I bought my first Tesla Model 3 with the earnings from Teslastics, a Tesla-focused startup I founded and later sold. I continue building in the Tesla ecosystem with WattChat and following the technology as it moves from software into the physical world.


Renewable Energies
Deeply interested in sustainable energy and the transition to clean power. I turn that curiosity into practical projects: Greenergy helps people understand their solar potential, while my own monitoring dashboard gives me the detailed view of production and consumption I wanted from my Fronius inverter.


Contact / 06
Let's Connect
I'm always open to discussing new projects, creative ideas, or opportunities to be part of your vision.
Catalonia
