Cracking Snapchat's Software Engineer Interview: LRU Cache & Design Challenges

Snapchat | Software Engineer | Interview Experience

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

Interview Process

The interview process was lengthy and consisted of several steps. It began with a phone screen that lasted about an hour, focusing primarily on behavioral questions and a couple of coding tasks. The interviewer aimed to understand my previous experiences and how I handled various scenarios.

After passing the phone screen, I was invited for an onsite interview, which included multiple rounds:

  1. Technical coding round (2 questions)
  2. System design round (1 question)
  3. Behavioral round (with multiple interviewers)

Technical Questions

  • Implement a Least Recently Used (LRU) Cache (Design, Cache)
  • Find the longest substring without repeating characters (String, Sliding Window)
  • Design a URL shortener service (System Design)

Tips & Insights

Overall, my experience was positive, despite the stress. The interviewers were respectful and engaged, and I felt it was a good demonstration of my skills and knowledge.