PayPal | SDE 2 | Chennai | June [ Passed ]

I have five years of experience working at a product company. I applied for the Software Engineer II position at PayPal through a referral from a friend.

The interview process started with an online assessment. There were two questions:

• Design three classes and implement a balance credit/debit logic. (Simple if-else validations)
• Given an input string like "010101", transform it such that there are no consecutive "01"s. Print the number of ways to change the string. For example, "010101" => "101010" => "110100" => "111000" - 3 times. Output: 3

I solved both problems.

The first round was a one-hour technical interview focused on data structures and algorithms. The interviewer asked me to solve two problems from LeetCode:

• Right View of Binary Tree
• Number of Islands

I solved both problems and was selected for the next round.

The second round was another one-hour technical interview. The interviewer started with basic introductions and questions about my projects. He then asked me some basic Java questions and said he wanted me to solve more algorithm problems. The questions were:

• Rotate Matrix by 90 degree
• Decode String
• A problem similar to 3 Sum. The array did not have duplicates, and the interviewer was looking for an O(n) solution.

The interviewer was expecting optimal solutions. I completed two problems within 45 minutes, so he gave me a third problem to solve.

The final round was a one-hour HR interview. The interviewer asked me behavioral questions, about my past projects, and what I learned from them.

I was selected for the position.