First is a call with HR. Pretty much a pass (just standard questions) and will schedule you for a call with the Hiring Manager. Hiring Manager asks you more in-depth questions about your experience.

I applied on their career website and after a few days got a call from one of the HR’s and he scheduled an interview with the hiring manager. The interview experience with hiring manager was extremely unprofessional. He was late of the interview and asked me to wait for 10 more minutes as he is caught up in other works. Then after 15-20 mins he joined that so called interview again and now comes the most weird part he says currently he is driving and he is gonna take that interview while driving. At this point of time I was like seriously ? Is this really happening? We went on with the discussion and it was more like a introduction session.He didn’t ask any proper questions and was more likely not paying much attention to whatever I am saying. And in last he said he really like my profile and would like to proceed further but after a few days I got an email about rejection. This clearly shows the level of unprofessionalism which these folks have as they have rejected me without conducting a proper interview and I am happy that I didn’t proceed to further rounds otherwise I would have wasted a few more days in the process.