Cracking Snapchat's Software Engineer Interview: Binary Tree & System Design Challenges

Snapchat | Software Engineer | Interview Experience

Interview Date: Not specified
Result: Not specified
Difficulty: Not specified

Interview Process

I had an onsite interview for the Software Engineer position at Snapchat. The interview consisted of two technical rounds and a behavioral interview.

In the first round, I was asked to solve a problem related to data structures. The interviewer wanted to assess my understanding of trees and graphs. After discussing my approach, I implemented a function to find the lowest common ancestor of two nodes in a binary tree.

The second round focused on system design. I was asked to design a scalable notification system. I talked through my design choices and how to handle high availability.

Finally, the behavioral interview was more relaxed. The interviewer asked about my previous experiences and how I handle team conflicts. Overall, I felt the interviews went well and I was able to demonstrate my skills effectively.

Technical Questions

  1. Lowest Common Ancestor of a Binary Tree (Tree, DFS)
  2. Design Notification System (System Design)

Tips & Insights

Be prepared to discuss both technical and behavioral aspects of your experience. Demonstrating clear communication and problem-solving skills is crucial.