I applied online. I interviewed at Korea Telecom (Seoul) in May 2013
Interview
2 Rounds of east interviews. They ask you general questions about what you have done in the past. They did throw you a business case and want you to analyze, but the business case is poorly organized, and the interviewers don't even seem to know how to analyze the case themselves.
I applied through a recruiter. The process took 2 weeks. I interviewed at Korea Telecom (Soeul) in May 2014
Interview
Recruiter picked me up and submitted the resume to KT had an interview. There are three senior engineers as interviewers. They asked me not only technical questions but also personal questions.