[ghaff]

I expect it would be effectively impossible. The meaning of titles vary markedly between companies, a lot of companies don't even have well-standardized titles, and people often don't list a succession of titles within a given company. And I'm not sure how any of that maps to success anyway. Even if you had salary info, which you don't, that's only one metric and, for many, not even the most relevant one.

[MoBattah]

Perhaps data from large HR departments would be useful. Although that would limit it to people who stay at the same company.

Brings another question, is it possible to find out which two companies in the world have the most overlap between employees? To clarify, two companies which a majority of knowledge workers jump between.