You absolutely should, if you have the $85k+ budget for a senior email developer (even when you may not have work for them) and a clear vision for the role.
If you don’t have both of those, consider becoming an EmailArtisan member. As an EmailArtisan member, you have access to custom-coded emails whenever you need them.
You may already have a full-time email developer on staff. EmailArtisan would supplement their limited bandwidth.