Reached out by HR and they scheduled interview. Interview process is very pathetic he asked me one question of trapping rain water I told him the approach and also wrote a working code and when I asked him to tally answer of testcase he told answer is incorrect even though I tried manually my answer is correct and I can see he was using google for asking and matching answer

Had 3 rounds in Paytm 1. Coding round on Hackerrank 2. Pair coding round where interviewer asked about Java, gave a problem to solve and the ultimately convert the problem to API. 3. Manager Round, where he asked about system design and Kafka.