Video proctored Hackerrank with 2(?) coding problems and ~5 multiple choice. Coding problems could be done in any language and were fairly generic (ie. typical Leetcode). Multiple choice were more specific to NVIDIA, multiple questions asked about threading.
After the initial application, they sent out a HackerRank that took about 1-2 hours to complete. Being proficient in data structures and algorithms will definitely help you perform better. There is both a coding and a multiple-choice section.
Interview questions [1]
Question 1
Two coding sections and 3-4 multiple-choice questions
The interview was okay. Questions about the job description and basic behavioral questions. Mine was on a team specific to robotics. Overall, I got what you would expect from an interview.