I applied online. The process took 2 weeks. I interviewed at Two Sigma (New York, NY) in Dec 2013
Interview
The process is not well planned. They requested to call but didn't call. Rescheduled several times and at last called about 1 hour late. Even the phone interview process took so long. I already got several offers from other companies while this company is still rescheduling the phone interviews again.
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.