It was good. They asked thermal design conceptual questions. They were trying to test if computationally you can estimate the heat dissipation from a street light. They are trying to see how think about things.
Interview questions [1]
Question 1
How to calculate heat flux at a boundary condition for a given problem.
1. screening with recruiter 2. screening with hiring manager 3. 1 day Virtual Onsite interview
Questions were deeply technical but average difficulty.
I lost my interest in the onsite interview step due to rude behaviors!
I haven't gone through the whole process, but The one interview I had was technical and difficult, for me it lasts more than 45 minutes. It takes time and effort to prepare.