It's just one round of online assessment, followed by another phone interview. The interview asks some medium-level LeetCode questions. They also put more emphasis on different API methods, such as in what scenarios to use PUT/DELETE, etc.
I can't remember, but it's LeetCode easy/medium level.
The following metrics were computed from 21 interview experiences for the IBM Software Engineer (Internship) role in Canada.
IBM's interview process for their Software Engineer (Internship) roles in Canada is very selective, failing most engineers who go through it.
Candidates reported having good feelings for IBM's Software Engineer (Internship) interview process in Canada.