What should I expect in this interview? I know how to prepare for coding challenges but not sure about system design questions. What are the expectations of a new phd grad? How about the "research and experience interview"?
Memorize the periodic table, obviously.
Research scientist for what? You gotta know everything about your research, and be able to code
These are great questions for your recruiter. Coding challenges are standard LeetCode stuff just like any SWE interview.