I applied online. The process took 3 months. I interviewed at Merrill (London, England) in Jan 2014
Interview
2 Online Tests, Two telephone Interviews and full assessment day comprising a written test and a number of interviews both technical and otherwise, a presentation on an unknown topic given 20 minutes to prepare, and a group debate assessment.
I applied through university. I interviewed at Merrill (New Brunswick, NJ) in Mar 2017
Interview
Simple on-campus interview. Behavioral questions mostly with a technology associate who talks about what they do and what roles are available in the firm. Goes over your resume and does simple behavioral questions. No technical questions.
I applied online. The process took 4 weeks. I interviewed at Merrill (Singapore) in Jan 2017
Interview
Online application, phone interview and one round on site interview for technology analyst internship program. Interviewed by different groups and get offer one week after on site interview. Overall good experience.
I applied through university. The process took 2 weeks. I interviewed at Merrill (Bukit Merah Estate, ) in Mar 2016
Interview
The interview had a relaxing vibe and there were two gentlemen from the project team I potentially would be joining who joined as interviewers. Questions were mostly competency-based and mixed with technical questions that are simple and easy to answer. My suggestion is to think through before answering. You can ask for a piece of paper and a pen for help in drafting too.