A site like this would be nice, but it would need a steady team of volunteers to source job listings.

I suspect most job openings and offers are launched on country-specific websites and systems, many which probably (even intentionally) are locked in and lack a public API.

Right now, checking Norway, there are zero listing. That may be true (I wouldn't know), but from that alone I'm guessing this site does not know how to source jobs from the "typical" Norwegian employment sites.

So who are going to bother to volunteer for a site which lands everyone else a job but themselves? It seems like a hard thing to get right.