Things like this have been suggested in the past. Unfortunately there are dozens of job boards for tech jobs. I don’t know how a board like this would be able to compete, by a couple orders of magnitude.
I don’t know about getting the companies getting involved. They can reach a million people on Stack Overflow. Even more on Indeed, Monster, Glassdoor, etc. I don’t know if it would be worth it for a company to invest the time to keep FCC updated.
Sometimes people will post jobs they hear about, usually in this room. I hope they keep doing that.
Just my $.02.