The interview process of Popsugar is pretty simple. I applied online, and got a call within 3-4 days for the ShopStyle's QA-Automation team. They were building an automation framework to test their web application, and extending it to mobile applications (IOS & Android) as well.
I have given a phone screen which was like going over on my resume & answering some basic software engineering questions, Linux questions & explaining the tools which I have used in my previous experience.
Phone screen followed on to on-site interview for 2 hours consisting of 4 rounds out of which one with your manager.
They give you decision pretty quick within 3-4 days of your on-site interview..