I applied through university. The process took 3 months. I interviewed at Citi (New York, NY) in Oct 2018
Interview
Two stages of Interviews. First stage phone interview with two different people. if successful, would be invited for a second round interview at the headquarters in NY and second stage at the company headquarters.
I applied through other source. The process took 1 day. I interviewed at Citi (Gurgaon, Haryana) in Jan 2015
Interview
Campus Selection Process, pretty smooth with multiple rounds of personal interview. Usual questions. No case study etc. Interviewers were patient, heard thoroughly & asked counter questions. The result was shared immediately after.