I applied through an employee referral. The process took 4 weeks. I interviewed at Integral Ad Science (San Francisco, CA) in Jul 2018
Interview
Pretty casual. Come with lots of questions. They'll ask you the basics, but really it's a great time to get to know about the company. The timing takes a little while - I probably interviewed over 3-5 weeks.
Interview questions [1]
Question 1
Tell me a bit about your background and why you're interested in this job.