Snapchat | Software Engineer | Interview Experience
Interview Date: Not specified
Result: Offer received
Difficulty: Challenging
Interview Process
The interview process included several rounds focusing on coding, system design, and behavioral aspects.
In the first round, I solved two coding problems. The first was about implementing a LRU Cache, where I used a combination of a hash map and a doubly linked list to achieve O(1) time complexity for both get and put operations. The second problem involved designing a URL shortening service, where I discussed my design choices regarding database schema, API endpoints, and the hashing mechanism.
The second round was a system design interview where I was asked to design a large-scale notification system. I explained how to handle scalability, ensure message delivery, and manage user preferences efficiently.
Finally, the behavioral round focused on my previous projects and experiences, with interviewers interested in my approach to team collaboration and problem-solving under pressure.
Overall, the interview was challenging but enjoyable, with friendly and engaging interviewers.
Technical Questions
- LRU Cache (Design, Data Structure)
- URL Shortener (Design)
- Notification System (Design)
Tips & Insights
Be prepared to discuss your design choices and thought processes in detail. Emphasize your problem-solving skills and ability to work in a team during the behavioral round.