Optiver Software Engineering interview questions

1. Take home assignment on Hackerrank in which you are challenged to solve some algorithmic problems. This should take ~2-3 hours, but you have 2 days. 2. 30 minutes HR Interview about your motivation and to answer possible questions you have. 3. Technical interview

They gave me a custom Hackrrank problem where I have to write a tree search algorithm that detected cycles, ill-formed data, and illegal splits. They scheduled me an interview without any technical questions.