‘Is that 630 total hours of flight time? Euro flight training seems skimpy. I doubt a 28 year old would be flying an airbus of a US airline.’
It Russia a captain in his or her earlier 20s is quite common. A 28 y.o. would make a veteran airman, who probably also spent some time in AF before moving to airline for longer $.
It might be true for Germany as well.
Co-pilot hid medical problems from the airline.
http://www.cnn.com/2015/03/27/europe/france-germanwings-plane-crash-main/index.html