Madrid, Spain — Est. 2024
The
builders'
house.
A free workspace, a curated community, and a launchpad for founders building real companies. No coworking fluff. No networking theater. Just building.
“You know
the feeling.”
You’re building something real, but you’re doing it alone. The coworking space has bean bags and networking events where nobody follows up. The startup meetups are full of people with pitch decks and no product.
You want to be around people who actually ship — other founders who’ve felt what you feel, who’ll call your bluff and have your back.
Until now.
This is for founders.
Founders building companies, not collecting job titles.
People who bet on themselves before anyone else did.
Those who’ve shipped — or are so close they can’t sleep.
People who give before they ask.
If you need permission to build, this isn’t your place.
The builders.
Shipping products, raising rounds, and building the companies the world will remember.
Carlos Reines
Co-founder
Reinventing product sampling with AI-driven logistics
Jordi Hales
Co-founder
Building global founder communities since 2012
Gonzalo Manrique
Co-founder
Largest tech bootcamp in Europe & LatAm
Ignacio Arriaga
Founder
Email marketing platform, bootstrapped to profitability
Diego Ballesteros
Co-founder
Password manager that never stores passwords
Pablo Villalba
Founder
Enterprise AI solutions for smarter operations
Everything you need to build.
Nothing you don’t.
Workspace
A permanent workspace with fast Wi-Fi and a builder-first setup.
Founder circles
Weekly sessions — not networking, actual problem-solving.
Demo days
Present in front of real investors who write real checks.
Mentorship
1:1 sessions with people who’ve done it before.
Partner perks
Tools, credits, and discounts from companies that get it.
Community
A community that shows up for each other.
Three steps.
Apply
Tell us what you’re building and why it matters.
Meet
We’ll have a conversation. Show us your work, not your deck.
Build
Get your spot. Start shipping from day one.
Rolling admissions · Limited spots · Decisions in one week
From Palo Alto
to Madrid.
In 2012, we opened Startup Embassy — a house in Palo Alto where entrepreneurs from around the world could land in Silicon Valley and start building.
Over the years, 2,000+ founders from 90+ countries came through our doors. They raised $700M+. They got into YC, 500 Startups, Singularity University. TechCrunch, National Geographic, and Forbes came to tell the story.
Mad Builders applies the same model — brought home to Madrid. Same conviction: put ambitious founders in a room together, remove the friction, and get out of the way.
Madrid.
Best quality of life in Europe. A startup ecosystem that’s accelerating. A city full of energy, talent, and ambition.
We’re based here.
If you’re a founder building something real, come find your people.
Questions.
Is it really free?
Yes. No membership fees, no equity, no hidden costs. We believe the best communities are generous by default.
Do I need to be a founder?
Yes. This community is built for founders — people with skin in the game, building companies they believe in.
How selective is it?
Very. We keep the community small and high-quality. We look for momentum, generosity, and proof of work.
What's expected of members?
Show up. Share your progress. Help others. Build things.
Who's behind Mad Builders?
Founders who've been through it. Operators, not spectators. People who wanted this community to exist and decided to build it.
Can I join remotely?
No. This is an in-person community. That's the point.
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