I applied through university. The process took 2 weeks. I interviewed at WhatsApp (Los Angeles, CA) in Oct 2017
Interview
I got an interview through my school's career fair. I had a on-campus and a Skype interview. The questions were fair and the interviewers were good. Did not receive the offer, but was a positive experience.
I applied through other source. I interviewed at WhatsApp (Mountain View, CA) in Sept 2017
Interview
Was approached by WhatsApp and asked to interview as part of an on-campus interview round they were doing. I wasn't available on campus so organized a Skype interview a couple of days later.
I applied through university. I interviewed at WhatsApp (Stanford, CA) in June 2013
Interview
Phone call with a founder. Went through technical questions / projects I've worked on. Interview itself was not too technical. Their HR reached out to me afterwards via email and told me the result.
Interview questions [1]
Question 1
What was the recent project you worked on in school?