The process took 1 day. I interviewed at Two Sigma (New York, NY) in Aug 2007
Interview
I got an phone interview by the project manager. The whole interview took about 45 minutes. At first a few questions were asked about my background. Then followed by a few more specific technical questions. The whole interview was conducted in a very polite manner. Technical questions targeted mainly on java programming langugages. I was asked the differences about exceptions and run-time errors, how would I handle an exception in a given scenario.
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.