Do you have any people in your company who could build what you need if given the time? Sometimes there are people who are pretty handy with coding who aren't called "programmers". They may be analysts or engineers or something like that. And is there anyone who understands the domain, has solid leadership skills, and at least a bit of tech skill, enabling them to serve as a project lead?
If you have both of these, you could conceivably use your existing staff to build at least a limited-functionality version 1, and backfill the jobs they used to do with new people. If not, you have the harder problem of needing to hire people to do something you don't know how to do at all.
If you have both of these, you could conceivably use your existing staff to build at least a limited-functionality version 1, and backfill the jobs they used to do with new people. If not, you have the harder problem of needing to hire people to do something you don't know how to do at all.