Heavily banked; questions range a lot from fairly clever ideas to implementation slop. If you're smart you have a good chance, but it's very RNG. Roll the dice and go.
The following metrics were computed from 39 interview experiences for the Jane Street SWE Intern role.
Jane Street's interview process for their SWE Intern roles is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for Jane Street's SWE Intern interview process.