I applied via employee referrals and did 6 phone interviews with 5 different individuals over the course of ~2 months. The interview process was unstructured and opaque. The recruiter would send me an email asking me to submit my availability for the next week. She would then tell me the date and time of my interview and the first name of my interviewer. (At which point I would do the extra LinkedIn search to dig up position/title.) After the conclusion of an interview, I would wait to hear back from the recruiter, at which point I'd get an email congratulating me for moving on in the process and again asking for my availability. And repeat. 5 times. Interviews tended to be quite similar, focusing on "how would you think about this problem" sorts of questions. Every individual I spoke with was polite, intelligent, and passionate about their work. But there seemed to be minimal communication between interviewers, and I didn't have a sense that the interviews were building on one another. Most asked me whom I had already spoken to and whether they had already asked me certain questions. After two months, two employee referrals, and 6 interviews, I received a generic email from the recruiter informing me that I was not moving forward. She initially told me she could not provide additional feedback. Ultimately the hiring manager followed up with a short email a few hours later with feedback that felt like the professional equivalent of, "I have to wash my hair tonight." A few hours after I received the impersonal rejection email I received an email request for donations from Khan Academy... Khan is an amazing organization filled with smart, passionate, hard-working people doing great work... but my recruiting experience was a nightmare.