TL;DR, I expected a hot growth-stage company run by experienced founders and employees to have a professional interview process and was disappointed. It's NOT acceptable to keep a candidate waiting a whole month for an official answer after the onsite interview. I interviewed for a BI/analytics-oriented data science role in spring 2017. I applied through a recruiter I met at an event in SF and had a quick recruiter phone screen, as well as a 30 minute phone call with the hiring manager. After completing a fairly standard take home data challenge, I went in for an onsite that lasted about a half day. The interview itself was more or less fine - some of the discussions around Affirm's business and product were interesting, and the people were very friendly, although I got the sense that the role didn't align well with my interests. One interview slot consisted entirely of whiteboarding complex SQL queries, which was a real head-scratcher. At the end of the day I didn't really feel like i had great rapport with the interviewers or that I was being evaluated on technical/domain knowledge useful to solving real problems. My real issue with the process was the unreliable communication with the recruiting team. At the end of the onsite I sat in my room for ~20 minutes wondering whether it was OK to leave, and had to call one of the contacts on the candidate sheet to get the go-ahead. Also, it took Affirm about 2 weeks just to review the take-home exercise, which is kind of excessive as well. And who keeps an interview candidate in the dark for a whole month after the onsite? Obviously at that point it's a rejection, but it's simply rude and downright unprofessional. My message would be to stop treating recruiting and interviewing as a cost center and really invest in the people and process.