Mainly tested about Machine Learning Knowledges, no live coding, but the interviewer sometimes interrupts you when he felt you were wrong. In general the process wasn't complex but requires candidates to be knowledge wise prepared and familiar with the resume.

we got PPI through campus challenge of AMEX. Then 2 interview rounds, both Tech + HR mixed. Firstly, they asked us to describe what we did in intern and explain all the projects, followed by questions.