I applied through an employee referral. The process took 2 months. I interviewed at Two Sigma
Interview
Fairly long and intensive process. There is a phone screen with a recruiter, an online coding test, and a technical phone interview. If you do well enough on those, you get invited on site. The morning consists of 3 one-hour interviews followed by lunch. If you did well during the morning, you will meet with heads of teams that are interested in hiring you.
Interview questions [1]
Question 1
A few algorithm questions, a few software engineering best practices questions, and some general experience questions.
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.