Optiver

I was contacted by HR for a brief phone screen. The interview was with a person from HR, who basically asked the basic "getting to know you" type questions. Afterward, they told me about the next steps in the interview process if I were to proceed.

I applied online. The process took 1 week. Phone interview over Zoom with technical hirer. This was a 30-minute interview consisting of general behavioral and resume check and work background. Expect your most relevant experience/project to be asked

I spoke to a campus recruiter and was emailed the following day to schedule an interview. There were no technical questions; the interview was entirely behavioral and lasted nearly an hour.