Avionte BOLD and Hubspot Integration

We have Hubspot's Marketing Hub and Service Hub, and I am working on redesigning our company website on the Hubspot platform. I am struggling to figure out how to create a data sync between Hubspot and Avionte to continuously data-sync Companies, Contacts, Activities, and job postings (for our website's job board). I know that Bullhorn has a public Hubspot app to easily download and will do exactly what I want, but there is not one for Avionte. From what I see so far, I might have to use Hubspot and Avionte's web API to create a connection. And for the job board postings, I'll need to create a JSON integration. Neither of these things I've been able to figure out yet. I have some coding experience and would prefer not to hire a developer if I can do this myself. If anyone has figured this out, I sure would appreciate any assistance!