Ask HN: How an engineer can find a business cofounder for a startup?

I like being in the new project/company from day 0 (and I already did that a couple of times). I also prefer to focus mostly on technology.

That said, how would you approach problem of finding a business founder? Are there any other ways than reaching out to my personal network?

I live in EU. Curious person will be able to find my resumé on the web.