I applied for the position online. A recruiter reached out and scheduled two back to back phone interviews. The first one was behavioral and included a code reading portion, and the second one was a technical coding question.
I applied online. The process took 2 months. I interviewed at Google in Jan 2016
Interview
I was invited to interview at the end of December, and because of the holidays I had two back to back 45 minute interviews a month later, at the end of January. I waited a week to hear that I had moved on to the hiring committee, and I got the offer about 4 weeks after that!
Short essay responses included with resume and then 2 back to back 45 minute interviews, both technical questions. Nothing very complicated (certainly not the level you get for the real software engineering internship) but they're still looking for smart people who absolutely know their stuff. It's important to review your computer science courses and understand fundamentals, but don't expect some crazy question from Leetcode to pop up.
I applied online. The process took 6 weeks. I interviewed at Google
Interview
Applied online and heard back about two weeks later. There were two technical phone interviews, 45 minutes each. Interviewers were super friendly. The interviews were mostly technical, and the second interviewer asked a few questions about my resume.