Started with a video interview (talking to the screen for 3 minutes, questions available in glassdoor). Passed the first round and proceeded to second screening interview through Skype with a recruiter. Most of the questions are about your personality traits and experience, nothing really challenging. Should be aware of the BREAD process.
I applied in-person. The process took 2 weeks. I interviewed at AlphaSights in Jan 2018
Interview
Resume screening
Video interview (interview with your self with Qs given on screen)
Face to face (2rounds) with one hiring manager. 30 minutes. She will ask about CV, why your major why your uni etc
I applied online. The process took 1 week. I interviewed at AlphaSights (New York, NY) in Feb 2018
Interview
Very quick process. I applied online and they got back to me within a few days. The interview was online and was 4 questions. After that it took about a week to get back to me but I did not advance further.