Just a minor suggestion if applicable: My site didn't pick up your listing - Corvi has a direct integration with Ashby. I recommend enabling all of job boards in integrations to get your posting to job search engines beyond popular ones.
Oh, I'm on the job market, unemployed and probably wont apply becasue of the contract. That's probably your reason for not getting the quality of candidate you're hoping for. that hourly range goes pretty low and doesn't give confidence that a potential employee won't get low balled