Ask HN: How do you market to developers?

I'm starting a decentralized co-op / venture studio and am trying to reach developers to join.

Things I've tried:

- Blogging on medium - Somewhat of a low conversion rate, but easy to do - Guest blogging on other sites - Shaking hands and kissing babies (meeting people in person via a meetup I started)

Things I haven't tried:

- Paid services / FB ads / Google ads - Podcasting

Would love any suggestions or thoughts on what is effective these days.