STEP 1 - Use non-traditional methods - like a dress rehearsal - where the final applicants work remotely to create a website clone..
STEP 2 - Fast-track your hiring process and onboard people based on proof of work. Devs would ship small features and fix bugs frequently, while communicating with you on video call.
STEP 3 - You get to decide at an interview for fulltime offer or longterm contract. They might not be ready for the fulltime job just yet, until they have engaged in a contract job with you.
$ git clone https://github.com/awesomething/Jobstar.git
This will automatically open a new browser window with the project.