A 90-day build · Madrid
Build the future
of finance.
Bring an idea, or the product you're already building. Take it further in 90 days, in Madrid.
- Kickoff
Sunday 15 November 2026
15:00 – 20:00 · Madrid
- Demo day
- February 2027 · Madrid
Wherever you start
For ideas, prototypes and live products
Students, professionals and founders: the Challenge is open at every stage. Come with a problem you want to solve, or with the product you're already building, and take it further in 90 days.
- 01
An idea
A problem you want to solve. Or pick one at kickoff, including a challenge from a company's roadmap.
GoalA product that works.
- 02
A prototype
Something that half works, and needs more hands, the right tools and a deadline.
GoalA product that works, on stage.
- 03
A product already live
You have been building it, maybe alone. You need people, tools and a room that knows finance.
GoalA pilot, a partner, a client.
Building alone? Bring your product and find your team at kickoff.
How it works
90 days, not a weekend
Teams start from a real problem in finance, or from the product they're already building, and take it further on their own schedule, with the help of mentors. Four moments keep them moving.
Savings · Payments · Pensions · Digital money · Compliance · Your own idea or product
Sun 15 Nov 2026 · Madrid
Kickoff
Meet the other builders, form or complete your team, and set your goal for the 90 days.
Every week
Office hours
Time with the people behind the stack. Bring your questions on the tools you build with.
Every 3 weeks
Checkpoints
Each team shows its progress in front of the community and gets feedback.
February 2027 · Madrid
Demo day
Every team shows what it built, on stage, to people who work in finance and tech.
Partners
Tools from our partners
Our partners open their tools to the teams.
More partners to be announced.
Want to be a partner, or need more information?
FAQ
Before you register
Can I join with a product I'm already building?
Yes. The Challenge is open at every stage: an idea, a prototype or a product already live. Bring it as it is, and use the 90 days to take it further.
I've been building alone. Is this for me?
Yes. Come with your product and find the people you're missing at kickoff: product, tech, business or AI.
Do I have to be in Madrid?
For demo day, yes: every team presents on stage in Madrid, in February 2027. For the kickoff and the checkpoints, we strongly recommend coming. If you can't make one, you can join online. The rest of the time, your team builds wherever it is.
Are office hours in person or online?
Both. They take place in Madrid, and you can also join online.
Do I need a team?
No. Come as a team, or alone and we build yours at kickoff.
Do I need to write code?
No. A team covers product, tech, business and AI. Bring one of them.
How much time does it take?
Plan for about 10 hours a week, on your own schedule.
In Spanish or in English?
Either. Teams work in the language they share.
I have a job. Can I take part?
Yes. Check your employer's rules on personal projects first.
Who owns what we build?
We take no stake. What you bring stays yours, and the team owns what it builds.