I applied for a GPU software engineer position and a few weeks later, I got contacted by a recruiter, which was followed by scheduling an online screening interview 5 days later. I was then sent a 2-hour offsite technical assessment (for which I had to sign an NDA) and I had to choose some time where it would be perfect for me to do it.

After that, I got invited to the final interview. It was actually 2 interviews, a technical one which lasted for about 3 hours with some breaks in between with 2 senior software engineers and a peer, followed by a 30 mins behavioral interview. Then, it was followed by an HR call to discuss salary and relocation.

Normal C/C++, computer graphics, computer architecture, and synchronization questions were asked, like what is the difference between static and extern? What is the difference between a mutex and a semaphore? What is a PBO? What is a fence in Vulkan? What is a swap chain?

Some bit manipulation problem solving was involved as well. Describe how a cache works. A system design problem was included. Some code segments were shown and you should find the bug(s) in them.