I had a phone screen in late January. The interviewer's nationality was not specified. The coding question was: You are given a string S describing a street, in which 'H' denotes a house and '-' denotes an empty plot. You may place water tanks in empty plots t...

I had to implement a function that simulates how a load balancer routes websocket connections to multiple Jupyter servers. The function receives a sequence of textual requests and decides which target server each connection should go to while maintaining inter...

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...

I was asked questions about maze algorithms, transformer self-attention, and sparse matrix multiplication.

In late January, I had an onsite interview. **Round 1:** The interviewer barely interacted, only nodding or shaking his head. The question was: given any two subsequences, determine if they belong to the same parent sequence. The follow-up was to extend this t...

I had two back-to-back rounds, each lasting 45 minutes. During the interviews, I was given only a text editor. I had to define variables and test cases myself, but the code didn't need to be fully runnable. In the first round, I solved LeetCode 198. The follow...

The coding questions I encountered were: 1. **Virtual Machine Allocation:** There are *n* types of virtual machines with given initial inventory counts. *m* customers request to rent machines. Each customer rents from the type with the highest current inventor...

## Preparation Tips & Key Takeaways ### What I Learned - I should have prepared more behavioral questions to better handle the final round. - Understanding tree data structures and key-value store designs is crucial for Databricks interviews. ### Recommended P...