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...
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## 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...
The coding question I got was: ``` class IPv4Iterator: def __init__(self, startIp): # Initializes the iterator with the startIp. # The first address yielded by the iterator must be exactly startIp. pass def hasNext(self): # Returns true if there is at least on...
## Preparation Tips & Key Takeaways ### What I Learned - It's important to understand the trade-offs between different KV store implementations for payment systems. - Consider different consistency models for different parts of the system. ### Recommended Prep...
This was a recent onsite interview experience. The interview covered two main areas: **Part 1: Version Dependency** I was given three types of testing cases: simple, large, and interesting. * I used binary search on a flattened list. Originally, a linear searc...
I had an HR intro chat. The recruiter described the interview process: two technical screening rounds (coding-based). The first is an ML coding round, and the second consists of three back-to-back coding interviews (one ML, two general coding). The final stage...
The coding question was a new problem involving overlapping key ranges in a sharding system. The problem involved a `Shard` class with `id`, `start`, and `end` attributes, and a `Shards` class with methods to `add_shard`, `remove_shard`, and `rebalance`. The g...
