The process was smooth but definitely challenging. It started with an online assessment (OA) on CodeSignal, which had 4 problems ranging from easy to hard.
After passing the OA, I had two technical interviews with Google engineers. Each interview was 45 minutes long and focused on data structures, algorithms, and system design (even for an intern role!). The first interview had a medium-level graph problem, and the second one was about designing a rate limiter.
The final round was a host matching interview, where I spoke with a potential team manager. It was mostly behavioral, with some light technical questions related to their projects.