I applied online. The process took 2 weeks. I interviewed at Direct Edge ECN (Jersey City, NJ) in Mar 2019
Interview
The interview process was very smooth. I arrived at the firm at 8:45 AM, the first interviewer showed up at 9:am. Each interviewer took about one hour a d went into very detailed questions regarding the items on the resume
Interview questions [1]
Question 1
They had many many questions on the systems and networking. Asked about clustering and TCP/IP routing