I applied through a recruiter. The process took 1 week. I interviewed at Citi
Interview
Sending in email directly to HR I met in career fair. The interview was scheduled a few weeks after that and initially was an informal phone call from HR if I would still be interested in joining internship program. The interview took only around 45 mins. Mostly behavioral question since I applied for marketing department (more specifically credit card department)
It was a really good interview process that I really liked and enjoyed doing. The first round was very casual and the questions werent challenging in the slightest. It felt low pressure or stress
They asked a mix of behavioral, technical and market questions. Pretty standard interview, no huge curveballs. There were a few brain teasers and mental math questions, no paper pen allowed.
A few rounds of group interview, some with 1 invigilator, some with a panel, and one one-to-one interview. Interviewers appeared stern and not the most friendly, perhaps to give off a sense of seriousness.