I applied through a recruiter. I interviewed at Pinterest (Toronto, ON) in Mar 2023
Interview
One of the Pinterest recruiters reached out, it was 15 minutes phone call. I received an email with all resources useful for technical interviews and you can register for a public video call session with two of the Pinterest engineers, to learn about the interview and important hints. The next step was a technical interview asking algorithm, data structure, and general ML questions. if you pass, the system design interview is the next step.
Interview questions [1]
Question 1
Write the code to find the minimum number of coins to make a change.
recruiter reached out discussed teams during call, one technical round leetcode round, probably leetcode medium, then followed by onsite of five or six rounds mainly technical rounds with hiring manager call as well
I applied online. The process took 4 weeks. I interviewed at Pinterest in Aug 2025
Interview
The interview process had a phone screening followed by a panel. In the screening, they asked three ML questions and one coding question (LeetCode medium–hard). I solved the coding with BFS and answered all the ML questions correctly, but in the end they ghosted me.
Interview questions [1]
Question 1
Coding: You are given an integer array parent representing a forest of rooted trees with n nodes, where parent[i] is the parent of the i-th node.
If parent[i] == i, then node i is the root of a tree.
Otherwise, parent[i] < i, meaning that the parent always has a smaller index.
Every node has exactly one parent, except the root.
You are also given an integer nodeToDelete, representing a node to delete.
Your task is to delete nodeToDelete and all of its descendants from the forest.
Deletion is done in-place by setting parent[x] = -1 for every deleted node x.
Return the updated parent array.
I got an email and they set up an online interview. First step was coding interview. It was online. Two medium to hard Leetcode problems. I got an email and they set up an online interview. First step was coding interview. It was online. Two medium to hard Leetcode problems.
Interview questions [1]
Question 1
I got an email and they set up an online interview. First step was coding interview. It was online. Two medium to hard Leetcode problems. one question was sorting.