Look at unis with years in industry. This helps a lot and you could possibly get to work with your partnered company after graduation. The uni I've applied to for my engineering course has a scholarships where we are partnered with a company for summer placements and a year in industry and with the majority of people on the scholarship they work for their partner company on graduation.
Really with uni rankings its also to do with student satisfaction and other factors which really a employer wouldn't care about. Ranking is more a general guide for students looking for a uni that suits them, not for employers to know about how good a graduate is.