I applied through an employee referral. I interviewed at Fortinet
Interview
Waste of time where you are supposed to do live coding (LC hard questions) in front of the camera. Their questions are even tougher than Google and Amazon. The panel was not at all interactive.
Interview questions [1]
Question 1
Solve these 3 questions in 2 hours
Leetcode 151 - Solve in O(1) time complexity strictly in C when even strrev() usage is NOT allowed on the Hackerrank platform
Leetcode 25, and Base 64 encoding questions
These 3 questions were followed by typical OS questions like IPC mechanisms, Concurrent I/O techniques (Select/Poll), TLS Handshake, How to implement polymorphism in C
I applied online. I interviewed at Fortinet (Vancouver, BC) in Nov 2025
Interview
Coding assessment, then live coding assessment where they just watch you code, camera and mic on, and sits there silently. Once you are done, if you don't get the whole thing, they just say "it's a no" then drops the call.
Interview questions [1]
Question 1
A bunch (about 4) of leetcode style questions, Med-Hard difficulty
The HR representative initially contacted me by phone and explained the interview process. I was then given four coding questions, which were similar to a HackerRank-based test but slightly modified. Unfortunately, I didn’t pass that stage, so I don’t have any additional information to share.
Interview questions [1]
Question 1
asked me to choose one role to proceed, software tester or engineer
First round: 2 coding question using C. Need to have knowledge for basic data structure . And basic knowledge of computer network and operation system, especially about TCP and inter process communication.
Interview questions [1]
Question 1
2 coding question using C. Need to have knowledge for basic data structure . And basic knowledge of computer network and operation system, especially about TCP and inter process communication.
