I applied online where a recruiter contacted me to do a phone screen with recruiter. After that I interviewed with the hiring manager and then did a mock pitch in front of a panel

The interview process was both fast and long at the same time. While things moved quickly and were scheduled almost immediately, I interviewed with ~9 people including HR. This also included a pitch with a panel of 4-5 of the 9 people I had already interviewed with. It was a super intense interview overall, but I expected nothing less from a social media/tech company as it's become the norm. Everyone I met with was kind enough.