I applied online. I interviewed at Foundever (Belgrade) in Apr 2015
Interview
First you have to fill out a newspaper article with missing words, so they can test your knowledge of the german language. After that you have to write an Email on a sheet of paper, pretending it is a answer to an angry customer- also in the language that you want to support. After that you will be called to have a 1 on 1 "interview" with somebody where you just have to speak a bit in the language you want to support them with, mostly answering semi personal questions like what your hobbies are.
I applied through an employee referral. I interviewed at Foundever (Haiderabad) in Jul 2017
Interview
It consisted of multiple rounds.. first was JAM,followed by PI with the recruiter. Then there was a voice and accent round and then it was the ops round(PI with operations manager) which was the final round
I applied online. I interviewed at Foundever (Wichita, KS) in Mar 2017
Interview
They asked very few questions. They basically will hire anyone who has an internet connection and a monitor. They will tell you how great this job is and how much potential you have at Sitel.