Cracking Snapchat's Software Engineer Interview: BST & URL Shortener Challenges

Snapchat | Software Engineer | Interview Experience

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

Interview Process

The onsite interview at Snapchat consisted of three rounds.

Round 1: Technical Interview
The interviewer focused on data structures and algorithms. I was asked to implement a binary search tree and perform in-order traversal, along with discussing time complexities for different operations.

Round 2: System Design
I was tasked with designing a URL shortening service. I described my approach to building it, including database choices, scaling considerations, and caching strategies.

Round 3: Behavioral Interview
This round involved discussing my past experiences and teamwork. The interviewer inquired about challenges I faced in previous projects and how I resolved them.

Overall, the experience was engaging, and the interviewers were friendly. I felt I communicated my thought process clearly.

Technical Questions

  1. Binary Search Tree Implementation (Tree, DFS)
  2. URL Shortening Service Design (System Design, API)

Tips & Insights

Be prepared to discuss both technical and behavioral aspects of your experience. Clear communication of your thought process is key.