Snapchat | Software Engineer | Onsite
Timeline: 2026(Jan - Mar) • Fulltime • JobHopper • 
Waiting for result
I recently had an onsite interview experience with Snapchat for an iOS Software Engineer position. The day started with introductions and an overview of the interviewing process. I was informed that I would have four interviews spread throughout the day.
The first interview was a technical coding interview. The interviewer asked me to solve a problem related to data structures. Specifically, I had to implement a function that took a tree and returned the maximum depth. We discussed various approaches, and I explained my thought process while coding the solution on a whiteboard.
Next, I had a system design interview where I was asked to design a simple messaging application. I outlined the necessary components and discussed potential challenges, including handling scalability and user authentication.
The third interviewer focused on behavioral questions. I was asked about my past experiences working in teams and how I handled conflict. This seemed to be more of an exploration of my soft skills and my fit with the company culture.
Finally, the last interview was another technical one, but this time focused on iOS-specific questions. I was asked about memory management and the differences between strong, weak, and unowned references. The interviewer also inquired about my experience with Swift and some of the frameworks I have used.
Overall, the interview process was rigorous but friendly, and I felt that both the interviewers and I engaged in a constructive dialogue throughout the interviews.
I am currently awaiting feedback from the interview process, but I felt positive about my performance. If you’re preparing for interviews with Snapchat, be ready for a mix of technical and behavioral questions and ensure you know your data structures and design principles well.
Interview Questions
Maximum Depth of Binary Tree
Given a binary tree, find its maximum depth.
Difficulty: Easy | Reference: LC-104 | Tags: Tree, DFS
Design a Messaging Application
Design a messaging application that supports sending and receiving messages in real time.
Difficulty: Medium | Reference: N/A | Tags: System Design
Memory Management in iOS
Explain the different types of memory references in Swift: strong, weak, unowned.
Difficulty: Medium | Reference: N/A | Tags: iOS, Swift