I applied through other source. The process took 2 weeks. I interviewed at Two Sigma in Oct 2016
Interview
Contacted because resume was in a database for a conference. Interview was in person in a booth during the conference. First asked some questions about my resume. Asked why I wanted to work for Two Sigma. If you give a vague, general answer, they'll probably push for more. Then asked technical questions. Interview lasted about an hour.
Interview questions [2]
Question 1
How would you design a class/methods for reverse Polish notation? (They explained what reverse Polish notation was first, of course)
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.
