Initially, it was a fast process, I was told they wanted to make a decision before the holidays. I had a phone screen with an HR manager, then a call with the Hiring Manager, and then the following week I had 3 interview rounds, including a 30-minute case study presentation. The HR person I was dealing with was very delayed in her responses. I asked when I could expect to hear back about the next steps and I didn't hear from her until over a month later (despite sending 2 follow-up emails). I sent a 3rd follow-up email over a month later and within hours I got an automated rejection email. The HR person never provided any feedback or insights. They say they want to hire from Amazon/Google and they clearly model their hiring process after Amazon (all questions I was asked were based on Amazon behavioural questions), but then treat candidates this way after 4 interviews and a presentation, it's really unprofessional. To have a candidate go through this amount of prep to be ignored and then given a templated thanks but no thanks email showed me all I needed to know about their HR/recruitment process.