I would say early to mid 30s is quite common. You can do a post-doc or get a research scientist position in the industry after your PhD, and work for couple of

I would say early to mid 30s is quite common. You can do a post-doc or get a research scientist position in the industry after your PhD, and work for couple of years or so before you apply for academic positions. Something like PhD->Watson/MSR->academic role is not uncommon.