How and where to find a technical co-founders?

Hey, how you guys doing?

I would like to read some suggestions on where and how to find a technical co-founder. It would be nice to hear how you guys get approach.

I've been using different tools like posting on reddit and even here, but I haven't got any luck.

If anyone is interested, I'm currently working on Quonective - A new professional social network for investors and founders.