It is still a relatively small team, about 9 people from Ory working on Kratos I would say.
(not counting me, I mostly contribute documentation & quick fixes)
If you are interested in contributing and are unclear where/how to start, reach out to me 🙂
We also have need of virtually every programming language, especially Rust! Ory seems really popular in the Rust ecosystem and I would love to provide them with a good example app/guide. I have 0 knowledge of Rust though.