I applied through university. The process took 2 months. I interviewed at UC San Diego (San Diego, CA) in Jun 2020
Interview
Extensive application with qualified letter of recommenders. Requires dedication to the science with years of your life in experience. They look for people with passion for the work and those that are less likely to quit.
Interview questions [1]
Question 1
Describe a scientific problem you encountered and how did you resolve the issue?
I got interview by one of the professors and he asked about my background and the projects I worked on. Then he asked about some RC circuits. The questions were on the frequency response and step response of the circuits.
Interesting, insightful, positive experience where we talked about numerous different cases and what my interest are. also given time to ask questions which they answer in detail. Would recommend and a postive experience
The interview process was straight forward. I applied through handshake. Since I was a student in UCSD with work experience relevant to their requirement I was considered for in-person interview with professor. There were few technical questions and finally HR round.