Ask HN: Where did you find your co-founder?

Curious how you found your co-founder and which traits of him/her you attribute to the success of your project.

Really struggling to find a co-founder with adequate abilities. The HN motto is usually to start with someone you're like a brother/sister to and known for at least a decade, but so far my search for someone with the necessary dedication and abilities in my close surroundings was without success.

I'm not a first-time founder and already built two profitable SaaS (first one sold / second one makes enough profit to live off).