This round was primarily based on Coding and there were a total of two questions:

1. Reverse a linked-list (be sure to ask follow-up questions to get calrity especially in the easy questions like these) | link: https://leetcode.com/problems/reverse-linked-list/
2. Given k-sorted linked lists, merge them into a single linked list keeping the sorting intact. | | link: https://leetcode.com/problems/merge-k-sorted-lists/

There were quite a number of questions one can ansk in these questions to get the clarity as to what exactly are they looking for.

Solved both in about 30mins on a shared code-pad.

Then there were questions on ML basics and some indepth like:

1. How Decision tree works.
2. Whats' overfitting, how to take care of that.
3. Bias and Variance.
4. Different word-embedding technologies.
5. L1 vs L2 regularizations.

Then the interviewer discussed about the work they are doing and the challenges one tries to solve day in and day out.