In my experience promoting from within is still insufficient. Getting a promotion means maybe a 10% raise. Quitting means a 50-100% raise. I've got a guy on my team in a junior-ish position making 80 who is about to leave to make 160. There's no promotion path in the company to get that kind of raise over night.
Where the heck are these kinds of companies? I've heard jumping for a $10-20k raise (so, roughly 20-30%), but double for a junior? Unless COL influences stuff, I'd be wondering what he did right and knock that off as an outlier.
It's certainly rare, but my employer is aggressive about keeping compensation appropriate. Top performing new hires can see their comp double in 2-3 years.
