The process takes a long time; from the time I submitted my resume to the end of the interview, it took me about a month. Their official two rounds of interview, the first round of interview asked general questions, and then they were tasked to design (briefly describe) a robotic system, including what kind of sensor and hardware should be used, psucode for OS, and aid diagram for the robotic system. The second interview was basically to report on the task they signed.