I applied through an employee referral. The process took 2 weeks. I interviewed at Two Sigma in Aug 2015
Interview
First there's HR interview which is basically about introduction of each other. Then there's the code challenge. Not very difficult. After that there would be phone screen and onsite interviews.
Interview questions [1]
Question 1
The phone screen interviews are just about basic CS questions. Looking like they have a list of questions. I think I provided the correct answer for all the questions but they still failed me.
first interview was 60 minutes long with a leetcode hard question. second interview was 2 back to back 60 minute leetcode hard with emphasis on data structures. each interview had a 5 minute introduction and 10 minute at the end to ask questions
Standard medium difficulty hackerrank. The question involved decoded an encoded string. It was not something I had seen on LeetCode before and I think was unique to the company. The question was not that difficult but I ran out of time right before I could finish answering.
Interview questions [1]
Question 1
Decode a string encoded using a specific encoding algorithm.
It started of with one phone screen, then if you pass you have 2 back to back technicals, then 3 1 hour behaviorals, hiring committee, and management committee. Standard Leetcode and behavioral questions.
