Hi! This projects sounds rather cool. Are you still looking for a level designer? I have been working a game&level designer fot 3 years now. I always used Tiled when it comes to dev 2D levels, so I can start right away, once we have clarified a bit more the scope and the details of the request :)
Wr could run a small test to see if we collaborate well together! That is totally fine for me.
Feel free to reach out in discord _scr_ and we can schedule a call if you are interested in my profile!