I applied online.
The interview process is very hard. They want quite high competitive programming skills, and it is quite unlikely to get selected. It is the highest-rated interview experience on Glassdoor, and I would not suggest giving the interview and wasting your time.
There was an N-ary tree, lock and unlock problem in round 1, and then multithreading of the same part in round 2.
The following metrics were computed from 77 interview experiences for the Juspay Software Engineer role.
Juspay's interview process for their Software Engineer roles is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for Juspay's Software Engineer interview process.