The only thing that really does stand out is when you get a CV that says the person has done all the things that your org wants to do. (Yes that's bad for recent grads.)
Hired a couple of people recently, and guess what. They tick all the boxes. Worked for firms that did low latency cpp, wrote apps that did what we wanted ours to do, and using the tools that we wanted.
From the other side I got an offer a few months back, and same deal. I ended up not taking it, but it was just "have you written xyz kind of code for another firm?" And the questions were all geared towards that. And since I ticked all the boxes, everything went forward.
If your CVs don't contain that unicorn who's done the exact thing that you need, you have a lot of awkward conversations. Is Minotaur close enough? What about this other language, it's pretty similar, right? Maybe the OS isn't such a big deal for this project. They'll get used to finance, it's not that different from...