Looking for Recommendations for Compliance and Onboarding Software

Has anyone found a reliable software solution for onboarding candidates? I’m working in the healthcare field and typically need to gather, review, and finalize over 15 different documents. There are often back-and-forth communications involved, and I also require hospitals and clinicians to verify and sign the same documents.

Is there a software out there that can streamline this entire process? I’ve tried Deputy, but it doesn’t offer enough customization for my specific document workflow, and the formatting issues with the signing documents are problematic. Any suggestions?