I was invited to an interviewing session at one of the IBM local offices. There were about 10 candidates and 5 or 6 interviewers. I found it to be easy, and relaxed process. Very typical modern interview. Talked about past experience, current trends, aspirations, abilities, competencies, and what they have to offer in terms of immediate projects. They were looking for security generalists that can do customer-facing without dropping a ball and screwing an engagement.

you get referred. then you apply to a referral link , after that they will call you to schedule tech round which will be over webex. you need to carry identity proof. Once you are tech select then another round of interview will happen for (PDM) round it will be HR + tech as well.