Applied through a campus website and was first contacted by a person in HR about two weeks later. Had a first interview with a software developer, who mostly just asked about my experience and answered my questions. He was nice to talk to, didn't seem rushed or annoyed by having to interview interns.

Then took their online skill assessment test, which took about 2 hours. The programming questions were fairly difficult given the time considerations, so I didn't finish all of those. Just took the test recently, waiting to hear back about the results.

The hardest part was probably finding the seed number of an input. For example, 123 is a seed number of 784 because 123 * 1 * 2 * 3 = 784.