FWIW, your comment didn't seem like self-promo or spamming to me. In fact, I consider it to be on-topic because it plugs an important gap that has always existed for people that intend to contribute to OSS but cannot due to their immediate circumstances.

The "bug bounty" model is already used for eliciting security contributions from security researchers so it is a good thing you've extended it to elicit general contributions from devs looking to contribute to OSS and be paid for it.

BTW, there's an over-representation of TypeScript and Rust amongst the projects you have listed. I'm curious is this because you already have strong network in these communities, hence the over-representation or it is a consequence of something else?