My group is trying to fill several software engineer positions and at least one DB engineer position. Don't get excited; we were recently told we can now only

My group is trying to fill several software engineer positions and at least one DB engineer position. Don't get excited; we were recently told we can now only hire internally to our technology megacorp. That pretty much makes the task hopeless, but we didn't have much success hiring externally, either. It just means a bigger pile of internal resume spam from people who don't even claim to have the skills we need. Yes, this is the classic "we're hiring and can't find good candidates" counterpost to the classic "I've got mad skills and experience and can't get a job" post. Or rather, it's an offer. Does anyone want to hear why we're having trouble finding candidates and my advice for people wondering how to get this kind of job?