A lot of online job posts seem to require Unity in addition to Unreal. It still seems to be a program game devs have to learn to get a job, whether they agree with Unity as a corporation or not, so you may be surprised about how many people still at least Unity experience in their resumes. On the other hand, Godot is free AND open-source, plus probably more appealing to the hard-core programmers you seem to want.
Nabella
If the Waha thing still doesn't work out are you guys going to start a different project?
Skoops
Since I don't have a hard time limit, I'm gonna say it'll work out one way or another. I've only been looking for people for two weeks, and through pretty narrow channels.
But I am seeing how much of a game I can put together myself in Godot in the meantime; nothing at the same level of complexity, though. I'm giving myself the goal of getting something simple out in a reasonable amount of time for a total novice that may or may not be Waha-related (probably will be).