Build in Zurich.
Capture the world.

Build in Zurich.
Capture the world.

We give brilliant founders the space to gather. A place to meet, commit, and believe before the world does.

We give brilliant founders the space to gather. A place to meet, commit, and believe before the world does.

Who we are

J floor is a community of founders, anchored around a space.

In the heart of Zurich.


For solo founders and small teams at the earliest stages.

Students, recent grads, big-tech dropouts, and anyone wired to build.


Everything early-stage fits here: messing around with tech, getting first customers, building momentum, …


No equity. No fees.

J floor community

J floor space

Our first 6 months

J floor grew out of a community of builders at ETH and, since opening its first spaces in February 2026, has become the reference point for ambitious early-stage founders in Zurich.


Founders build alongside each other, share knowledge and connections, and help turn early projects into funded companies.


The recipe is still simple: Fill a room with brilliant people and let the magic happen.

Active Founders

23+

Active Founders

23+

Active Founders

23+

Projects

4+

Projects

4+

Projects

4+

RAISED BY MEMBERS

1M+

RAISED BY MEMBERS

1M+

RAISED BY MEMBERS

1M+

The original floor J (2025)

The original floor J (2025)

Zurich Builds

Zurich Builds