Two Sigma Software Engineer interview questions

Two Sigma is in the middle of a hiring acceleration, but their poor process and lack of communication both internal and external is going to cost them talent opportunities. The interviewers and recruiting teams failed in three major ways: 1. They didn't communicate with the candidate. I spent over 20 hours onsite, including 11 hours on the final day, speaking with teams from low-latency trading and market making, portfolio analytics engineering, and numerous other roles. After this last interview, I received zero communication from the firm or the in-house recruiters. 2. They didn't communicate with each other. After 20 hours onsite, the interview needs to be more about theoretical computer science. Incredulous of my success despite not having a degree, late into the second day they continued to ask a mix of CS 101 basic questions, finance domain-specific questions and djikstras problems. After 15 hours of whiteboard coding, their interviewers ought to know if I can code or not. After 20 hours of whiteboard coding, they're just insulting me. 3. They didn't provide information about the roles. Only one interviewer would actually talk about what they worked on and what would be expected me in the role. The interviewers asked me if I had any questions, which allowed me to ask them more specifics about what they worked on, but no one ever bothered to sell me on their roles or describe how their roles would intersect with my career goals.