There is a HN user called "whoisbuilding" who makes a post like this every months. These are the posts in the last two months:

* Ask HN: Who is looking for a co-founder? (July 2021) - https://news.ycombinator.com/item?id=27748680

* Ask HN: Who is looking for a co-founder? (August 2021) - https://news.ycombinator.com/item?id=28036070

Hopefully, that helps.