The first round involved debugging a Transformer model with the following issues: - Position embedding initialization - Mask not set to -inf - Missing loss.backward() - Incorrect dimensions in the projection layer's nn.Linear module The follow-up involved KV c...
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The coding question was about a virus, with about 4-5 sub-questions. The specifics weren't exactly the same as what I had seen before.
The problem required designing a persistent key-value store with specific serialization and restoration requirements. The coding question I got was: ``` // This is a provided API interface. interface Medium { /** * Saves a byte array to the storage medium (e.g...
Implement the `CreditSystem` class: - `CreditSystem()` Initializes the credit system. - `void grantCredit(String id, int amount, int startTime, int expirationTime)` Adds a new credit grant identified by id, with amount units. The credit is active in the interv...
## Preparation Tips & Key Takeaways ### What I Learned - I should have used SwiftUI instead of UIKit for the iOS coding challenge. - System design questions for chat applications are common and should be prepared for. ### Recommended Preparation #### Coding Pr...
The phone screen involved designing the video generation part of Sora. The client sends a request to generate a video, and I needed to design the scheduling and worker flow. A key constraint was that each worker can only produce one video, and they need to cal...
## Preparation Tips & Key Takeaways ### What I Learned - Thorough preparation is crucial, especially using resources like past interview experiences and system design platforms. - Even with strong preparation, the interview outcome can be unpredictable. It's i...
## Preparation Tips & Key Takeaways ### What I Learned - I need to be prepared for LeetCode-style coding questions, even when expecting a different type of problem. - System design questions require a solid understanding of fundamental concepts. ### Recommende...
I had two rounds of ML coding interviews. In the first round (75 minutes), I was tested on autograd. I don't think I did well because the interviewer asked me to run the original implementation, and an incomprehensible error message appeared. They asked me why...
## System Design for Extensible Chatbot ### Problem Statement Design a chat system supporting human users and automated bots with the ability to add new bot types without modifying existing logic. ### Core Requirements - Implement `ChatApp` to manage channels...
