It was a two step process. 1) Phone interview 2) On site interview The phone interview was 45 minutes. The onsite went for two days.

I got an email from the HR recruiter asking my availability for a phone screen. I had to send a follow up email after not hearing back for two weeks, seemed very unprofessional. After the phone screen I was asked to have a phone interview with the hiring manager. Directly after the phone interview ended I was contacted to schedule an onsite interview. Everyone was very friendly onsite except for the hiring manager who seemed to have made up their mind about me before I got there. Easy behavioral questions, a review of your resume, everything seemed to go well. I followed up three weeks after the interview and heard nothing. They sent an automated rejection email four weeks later.