Sent in an application and was contacted within a few days by the VP of Product. We had a short chat on the phone and he requested for me to come in the next day to take an hour long design test.
When I went in I was made to wait in the conference room to wait for someone in HR to bring me an NDA to sign because I might see some proprietary information while in the office. After signing I was given a tour through the office space and then brought in to the design room to take my test.
There's no point in mentioning what the actual test was since it might have changed. Just know that you should be confident in your web/mobile design skills. If you work predominantly in print, be sure to brush up on web and mobile before testing because it will be obvious if you don't.
After the test I was taken back into the conference room to wait while the VP of Product and lead designer looked at my work. They came in, asked me about why I made certain decisions with the design. Then they went over my portfolio and resume.
I was asked about my experience, certain portfolio pieces and my involvement in them if I worked with a team. They wanted to know if I would be okay with working on something day in and day out since they are a product, which is very different from working at an agency or in marketing.
The interview seemed to go well, they were easy to talk to and listened well.
When I was done with that initial interview I was told that the next step would be for me to talk on the phone with the head of HR. That phone conversation would be at least 3 hours (no, I'm not exaggerating) and I should be somewhere with few distractions. We scheduled the call and I left.
The next day was my call. We started with the usual formalities and then dove in to the actual interview. She started with asking me about the earliest jobs I ever had, which were in retail, and even my high school experience, which was odd. We talked about any hardships or difficulties I have had along the way, some personal life stories, how I dealt with sub-par working environments and difficult clients during my time as a freelancer. We were done in 3 hours (6-9pm) and she told me she got whatever she needed from me and said she'd get back to me soon with an answer.
About thirty minutes later I received a call from her with her saying that she called the VP of Product right after getting off the phone with me and discussed our convo. They decided to hire me on the spot and she made me an offer over the phone. I negotiated my salary and requested that she include that in my official offer letter.
The next day I had my letter in my inbox and I started the job the next week.
I'm assuming my hiring process was done in record time since they really needed a good designer to fill the position. In any case, they do get back to people fairly quickly if they're interested and want to move forward.