Behavioral phone screen with recruiter followed by a 3 question HackerRank. Onsite interview if HackerRank performance is good. Onsite consists of: - HackerRank review, where you'll go over hidden test cases you missed. - Design interview where you'll be expected to answer a technical question and talk about system design to implement it. - Behavioral interview, which was really just questions about your resume, but I had a feeling the interviewer was paying attention to how I answered and communicated. - Chat with CEO or CTO, to ask questions about the company

The process started with a 2-hour hackerrank test, which was unlike typical algorithm questions and was pretty enjoyable to complete. I then had a 30-minute behavioral phone screen, during which I was asked about my background and my interests in trading. I then attended an on-site interview in Chicago, which consisted of two technical interviews and a review of my hackerrank test. I received my final decision the next business day.