Two Sigma Systems Engineer interview questions

Two phone calls, first as a screener interview, second as a technical. First call was with the interval recruiter asking questions about my background information and current job responsibilities. Second interview was with a system engineer asking about my roles and responsibilities as well as more detailed info about my skills.

An initial recruiting phone call, followed by the first sixty minute coding test submitted via email, a sixty minute technical telephone screening, a full day on site interview that includes a very nice lunch, and which required an on site coding test, followed by another on site interview lasting a half day.