First had a recruiter call to discuss the role, then had a technical interview on ML, statistics and algorithms, then a set of coding/statistics problems to be submitted online in 72 hours.
Interview questions [1]
Question 1
What is the time complexity of matrix multiplication and how could you parallelise it across GPUs?
The interview proceess was very long with a difficult homework, there were: 1 rercruiter screen, 1 technical screen, homework which toook 3 days, 4 on-site interviews with 2 people each, 2 interviews with leaders, 1 technical, one coding. Recruiter ghosted me afterwards when asking for feedback or what went wrong after the entire process.