Right now the sole contributor is Mark Kaplun, a WordPress user and hacker since version 2.0.4, and a prolific contributor to the WordPress stackexchange.
He is standing on the huge shoulders of all previous (and future) WordPress contributor, and the contributors of the libraries used by WordPress.
But this is not intended to be a one man hobby project to be abandoned after the holidays, but a serious attempt in producing a product worthy of being used in the long run, and one man is less likely to be able to achieve that.
Therefor you are more than welcome to get involved, by contributing ideas and/or code in GitHub, and helping evolve this site’s content and visuals. If you are interested in contributing to the site, contact me at firstname.lastname@example.org (yes, even a proper email is not set yet for the domain).