Meetup is still a good source for making lots of surface-level connections, here's a quick search I did: https://www.meetup.com/find/?keywords=startup&source=EV

Meetup is still a good source for making lots of surface-level connections, here's a quick search I did: https://www.meetup.com/find/?keywords=startup&source=EVENTS&location=de--Berlin https://www.meetup.com/find/?keywords=startup&source=EVENTS&... edit: You'll probably have more success, as I don't know the German terminology for things like 'startup' - Geschaeftsaufstellung?