I applied through college or university. The process took 3 days. I interviewed at Two Sigma in Apr 2016
Interview
First a non-technical phone call asking me my interests and why I chose Two Sigma. That went fairly well. Then a technical phone interview by a French guy with heavy accent. Whenever I asked him to repeat what he said because I didn't understand it the first time he would be pissed off and say it to me in a rude manner. Then when he asked me to explain the software development cycle, I wasn't really sure but I had some idea. So I gave it a shot. Halfway through he wasn't satisfied and interrupted me and said, 'Okay let's move on." I did not hear back from them ever since.
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.