I was contacted by a recruiter via LinkedIn. The first round was with the Hiring Manager, mainly asking about my resume and why I wanted to change jobs. The second round was a technical phone screen. It started with quick-fire ML questions, all basic. I answer...
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During the phone screen, I was asked to implement a timed cache. The interviewer seemed to have modified a prompt by changing some keywords, which I didn't notice clearly. Each item has a fixed cache time. I initially wrote the simplest version and then a vers...
I was asked to implement a multithreaded latency tracker with two functions: ``` setLatency(long timestamp, double latency) getP99Latency(long windowSize) ```
The coding question was not a LeetCode problem but involved Tree DFS. It was not very difficult, but I had to write my own code to test it. The system design question was on ad frequency capping, which is a common question. The data modeling question involved...
My onsite interview consisted of coding and problem-solving. The coding questions I encountered were very similar to frequently asked interview questions. One question involved variations of string manipulation. Another question involved finding the longest su...
After applying online, a recruiter reached out to me after a month. The recruiter screening was standard. They mentioned that Ads is now centralized hiring and that interviews will be in the same pipeline before arranging team match. My phone screen questions...
I spent 30 minutes discussing my research project. Then, I was asked the following technical questions: - Describe self-attention - Why is the attention score divided by sqrt(dim)? - Describe LoRA, and what are its benefits? - Why does LoRA reduce GPU memory c...
Part 1: Given a list of episode IDs from a user's viewing history, determine if there are any duplicate episodes. ``` print(has_duplicate_episodes([55, 66, 77, 88, 99])) # return: False (no duplicates) print(has_duplicate_episodes([55, 66, 77, 88, 66])) # retu...
## Preparation Tips & Key Takeaways ### What I Learned - I need to improve my communication and clarification skills, especially using example-oriented clarification to avoid misunderstandings. - Under pressure, I prioritized correctness over elegance, which l...
I applied online and was contacted by HR the next day to schedule an interview. For the first 30 minutes, I was given three SQL problems related to measuring the success of a new movie launch on Netflix. I needed to design a pipeline and identify the necessary...
