If you're talking about internet rather than computers per se, then jobs that need access to knowledge have been transformed. Right now I have the entire british library at my fingertips for example - every major scientific journal published since the 1800s. And I can use database software to search the entire body of knowledge in my field. So I could search for a particular chemical reaction and have every example ever published displayed in 2 seconds. It would literally have been a day's work physically going to the library 20 years ago.
I doubt that's the most transformed job in society, just one example of a profession that's been turned on it's head.
China's collossal acceleration of scientific research is often tied to the digital revolution for similar reasons - ease of communication (in English), dissemination of research, literature searching etc.
A lot of jobs have been hurt by computers as well of course - and not just in terms of typists being eliminated. We're all doing more and more work just because computers enable so many tasks. So you can run large parts of a business yourself when back in the day it might have been a five man operation.