I applied online. The process took 3 weeks. I interviewed at Jane Street (Hong Kong) in Oct 2019
Interview
First phone interview. Prepare a PC to code. The interviewer will call you to guide you through the system. You can clarify or ask anything to the interviewer, he was so chill. The interview was language agnostic, although I think they would prefer O'Caml functional programming language more.
The process started with an initial virtual round, followed by an onsite interview. It included a mix of system design and coding problems focused on real-world system applications. Unfortunately, I didn’t perform well in the onsite, which was the most critical stage.
It was a very quick and painless process. Recruiter very responsive, kind interviewers. High implementation and difficult problems, so failed onsite after 3 interviews and a Question and Answer Session.
Did not pass the initial coding round. I tried to explain my thought in details to the interviewer but failed to translate my thought into code. So far interviewer is very nice.