PayPal - Senior Software Developer

I recently interviewed for a Senior Backend Developer position at PayPal. The interview process began with an online coding assessment on HackerRank. The assessment consisted of four questions:

1. Given an API URL, get the response and return data for a specific key.
2. A medium-level string manipulation question.
3. Subarray Sum Equals K (from Leetcode).
4. Concepts on Java and Object-Oriented Programming (OOP).

The second round was a system design interview. This round focused on basic OOP concepts and Java, design patterns, API design, and a Low-Level Design (LLD) of a parking lot. The interviewer asked questions about scalability using design patterns. I used the builder and strategy patterns.

The next round of the interview process is yet to happen.