I applied online. The process took 2 weeks. I interviewed at Bloomberg in Mar 2022
Interview
1 round of phone screening, 3 rounds of virtual onsite, 1 round with the engineering manager. The interviewers are all very helpful and professional. They give me a good introduction about their area of work.
Interview questions [1]
Question 1
1. Sort an n-ary tree
2. Design underground system
3. A hard graph traversal question
4. Restore a number stored in binary format in a linked list
I applied through an employee referral. The process took 2 months. I interviewed at Bloomberg (New York, NY) in Nov 2025
Interview
phone screen, one LC medium about backtracking and one medium using BFS/union find. Friendly interviewer and normal follow-ups.
Superday Round 1. one non-leetcode problem, like a OOP, easy to medium. One LC medium. Getting rectangle sum from a mutable grid, I cannot remember how to use a fewick tree so I just use a prefix sum, the interviewer is alomst satisfied.
Superday Round 2. One Leetcode Hard, find median in a data stream. Alot of followups on algorithm like why u choose this one not that one ... and a OOP. Interviewers are not friendly AT ALL with no hints.
Phone call for 45 mins. Interviewer was nice and went directly to question after very short self introduction. I don't know what else to say so so so so so so
Interview questions [1]
Question 1
Valid Transaction problem. The question can be found on Leetcode but he asked a different follow-up that I am not able to solve.