I applied online. The process took 1+ week. I interviewed at Columbia University (New York, NY) in Aug 2013
Interview
I got an interview invitation within a day after I submitted my application. The first stage of the interview was with a fellow post-doc. It was very lengthy (an hour and half) and we discussed also very technical details of my knowledge of the specific subject and of the work I will be doing. The second stage was with the PI, I gave a presentation, it was liked very much and interrupted halfway.
Interview questions [1]
Question 1
I was asked my family status, and whether they need to do something about the 2body problem. (Vary positive but it came out of the blue for me)
I applied in-person. The process took 1 day. I interviewed at Columbia University in May 2018
Interview
The interview was pretty easy which is common for a postdoc. I just had a Skype interview with the professor and then after 1 week or so got the offer.
I applied through college or university. The process took 2 weeks. I interviewed at Columbia University (New York, NY) in Jul 2016
Interview
I was called by my professor and it was one to one interview. I just had to present my previous dissertation work. It was very simple as it was for postdoctoral position. I was just asked questions based on my presentation and topic.
Interview questions [1]
Question 1
Are you interested in pursuing your career further in academics
I send a letter and my resume to the PI saying that I would love to join the group. Got some friendly answer so I went to new york to meet in person. Interview was rather informal, just a short chat with the PI and lunch with the rest of the group.