During the phone screen, I solved LeetCode 155 in about 20 minutes. In the virtual onsite, I encountered a classic job scheduler problem. Another question involved designing a key-value database, which is similar to LeetCode 981. The system design portion focu...
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I applied online and went through the following rounds: **Phone Screen:** Lasted 1 hour and 15 minutes. It was divided into two parts. The first part covered basic ML concepts, and the second part was a coding exercise. * **Part 1 (10-15 minutes):** I was give...
I had a phone screen with one coding question. The question was similar to LeetCode 402, but instead of finding the smallest k digits, I needed to find the largest k digits. For example, given the number 4902 and k = 2, the answer would be 92.
## ML System Design Questions and Answers ### Building a Recommender System - **Data Storage:** How should data be stored? - **Model Serving:** How should models be served efficiently? - **Candidate Selection:** - How many candidates should be passed into the...
The multiple-choice questions covered the basics of machine learning, including the difference between Recall and Precision, probability calculations, basic loss function derivatives (basic content learned in Machine Learning courses), and Overfitting and Unde...
I should have started coding immediately without hesitation. The time was very limited. For SQL questions, I need to practice writing efficient queries using window functions and CTEs.
## Preparation Tips & Key Takeaways ### What I Learned - I need to gain experience designing ML job schedulers. - It's important to balance service-level discussions with feature engineering and evaluation during system design interviews. ### Recommended Prepa...
## Preparation Tips & Key Takeaways ### What I Learned - The importance of being able to adapt known algorithm problems. - Recommendation system design requires understanding of system design principles and potential user needs. ### Recommended Preparation ###...
The coding question I received was: Implement a print function. The input consists of events, each with a name and timestamp. If an event with the same name occurs within 1 minute, print it only once. I initially used a hash map to store the event names and th...
The coding question I received was: Implement a weighted cache with the following requirements: - Implement `get` and `put` operations. - The cache has a total weight limit. - When the limit is reached, the key-value pair with the largest weight should be remo...
