I applied through college or university. The process took 3 days.

I applied through Campus Recruitment. guvi.in does the campus recruitment for Juspay. We had to write a written test on guvi.in. The written test consisted of both aptitude and technical questions. The second round was a coding round, which consisted of 3 questions labeled easy, medium, and hard. However, there's a cap on the number of times you can compile or run your code. The third and final round is a hackathon in their offices. One-on-one technical interviews will also happen in parallel. Overall, it was a positive experience, and it seems like an amazing place to learn and work.

In the hackathon, we were asked to display and rotate a cube without using any predefined functions or libraries like OpenGL.