PayPal

Machine Learning Engineer Interview Experience - United States

April 1, 2025

Negative ExperienceNo Offer

Process

The interviews went well, and I even received good feedback from the recruiter. However, I was informed after the last round that they are looking for someone with more experience. I'm not sure why that was not evaluated earlier.

Questions

In-depth questions about my work experience.

Focus on ML System Design rather than code.

Interview Statistics

The following metrics were computed from 5 interview experiences for the PayPal Machine Learning Engineer role in United States.

Success Rate

Pass Rate

PayPal's interview process for their Machine Learning Engineer roles in the United States is extremely selective, failing the vast majority of engineers.

Experience Rating

Positive60%

Neutral0%

Negative40%

Candidates reported having good feelings for PayPal's Machine Learning Engineer interview process in United States.

PayPal Interview Questions

Zigzag Conversion

Medium

Convert a given string into a zigzag pattern with a specified number of rows. Then read the characters row by row to return the converted string.

Strings

LRU Cache

Medium

Design a data structure that acts as a Least Recently Used (LRU) cache. Implement methods to get and put key-value pairs, evicting the least recently used entry when the cache is full.

Linked ListsArraysDynamic Programming

Word Search

Medium

Determine if a given word can be constructed from letters in a 2D board, where letters can be used horizontally or vertically. Each letter can only be used once in the word.

ArraysStringsRecursionGraphs