PayPal Software Engineer(Internship) interview questions

a brief introduction to the role and the team and following with a coding interview where I had to create a specific data structure in python, the data structure had to have all operations with O(1) complexity with N data.

The interview process is smooth with three rounds technically. Last round is with hiring manager. The code question isn't too hard and the overall communication is quite good. In the final round, the manager asked some system design questions and also asked me whether I want to focus on the backend or frontend.