You need something that will help you show documents that will help you map to those understandings, those contexts that people bring to the information very quickly. And documents are also the way the internet works, right? You want to be able to use the sorts of affordances that the engineers understand. Rest APIs, JSON documents, cache control. Because those are things that engineers know that will let this stuff work fast. It will also let you hire people who know how the internet works and don't have to understand all the complex crazy stuff that we call children, heritage people do, they make it possible.
Linked Data—and web architecture in general—as a hirable engineering skill
If you can hire engineers that don't immediately need to know the intricacies of cultural heritage metadata, you can expand the pool of entry-level people you can hire and then train up on the cultural heritage details as needed.