For Microsoft research engineer in Cambridge, be ready to solve one coding question (they will provide the problem before live video interview with a researcher). You have to submit the solution two days before interview. In the live screening interview, be ready to explain your solution, approach and they can ask to debug code and may ask you to write test cases for the problem.

For ML research engineer. ML system design interview, behavior, and ML coding. The ML system design interview was very similar to my domain (LLMs). The coding interview was about coding on the job, not like LC.