How you choose the company you wanna work with? [Startup Edition]

Disclaimer: We are only talking about startups, especially the ones which are in very early stage..

It's pretty similar to https://share.gvine.app/iH6SBt3iJ5JnCNmx9, but inversely.

What are the things you look for?

I know Founder(s) & Product is one thing, but how can you judge without being involved?

Especially in the case of early stage startups - no reviews, no product, nothing.

How do you judge the ideation of founder(s) - what you usually ask & look for?