what's the value add ?
what are you offering to candidates - a better interview experience (been tried before etc, those companies closed)
you want to solve a problem, however you are trying solve the problem at a wrong abstraction level -
the problem with the tech market hiring is a coordination problem
I see what you mean about it being a coordination problem. Do you think the main issue is that job boards create too much noise — hundreds of applications — instead of helping companies and candidates find better matches? If that's the case, what kind of system do you think would improve that coordination?