Need some feedback on a job board design

Hi everyone! I am working on the Job Post Composer for https://remotefrontendjobs.com and https://remotebackendjobs.com and wanted to share with you some early version of it.

I think I am gathering most of the information I need already, but I am wondering if all fields makes sense to you without labels on (I am using placeholders, which are not visible once the inputs are filled in)

Also, I don't think I am sold on the preview of the ad, because you don't really see a preview of the ad description right away, but just one for the main details.

Please share anything you got, this will probably be live in the next coming days (once I finish the Stripe integration :D)

Thanks!