Technical phone/remote login interview. They ask you to write code. There are two tasks:

1. A textbook algorithm.
2. A specific financial industry problem.

The next step is an interview with four people, in two sessions, with two people in each session. This part focuses mostly on generic algorithm discussions and more general problems to solve, presented on paper or verbally. They will be pushing the limits.

To pass these interviews, you need to prepare for about a week. The preparation goes beyond standard algorithms. For example, their expectations for a string search algorithm included Tries and similar structures, and for linked lists, separate synchronization of heads and tails.

Do not come to this interview thinking you are great. Prepare.

One of the topics was how to design an elevator system.