HR call, then first round getting a question to code in any language. The syntax is not important; they test your thinking skill.
Second round similar to first round, 3 times back to back.
The following metrics were computed from 156 interview experiences for the Jane Street Software Engineer role.
Jane Street's interview process for their Software Engineer roles is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for Jane Street's Software Engineer interview process.