What, specifically, do you want to know, Priya?
I assume you have seen the company's own websites:
This is an international IT consultancy with 20 branches in nine countries - including eight branches in various cities throughout Germany. They are: Hamburg, Berlin, Dortmund, Düsseldorf, Frankfurt, Stuttgart, St. Georgen, and Munich (Bavariaring 9).
You say your "friend has gone there". If that is the case, surely you can ask him/her for information? Which branch did your friend go to?
Or maybe someone else who is reading TT is an employee there. It's possible. Perhaps you are asking for insider information on what it's like to work for this company. But your post doesn't make that clear.