The first step of the interview is on HackerRank. You can find the questions online. Study binary search trees, strings, linked lists, and heaps very well.
The next step is a 3-hour long interview where you can [work/code] silently in front of other developers.
Study the things I added above.
The following metrics were computed from 7 interview experiences for the Fortinet Junior Embedded Software Engineer role in Canada.
Fortinet's interview process for their Junior Embedded Software Engineer roles in Canada is extremely selective, failing the vast majority of engineers.
Candidates reported having very negative feelings for Fortinet's Junior Embedded Software Engineer interview process in Canada.