I applied online. The process took 2 weeks. I interviewed at Two Sigma (New York, NY) in Jul 2013
Interview
You will be given a code assessment, and have to finish it in 2 hrs. But you can choose the time you want to start, and email the solution back in 2hrs. The question is not difficult. And then you will have a phone screen, and you will be asked some question about the projects on the resume, and some technical questions. I was asked several questions about OS. The final round will be onsite interview, but I didn't perform well in the phone screen, so I don't have that chance.
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.
