Google

Very tough, very long, and daunting. Several stages require a very long waiting time after each. But this is a top-tier company, so you wouldn't expect anything else.

I applied through a career fair. The process took three weeks. I had my phone interview in October 2017. The interview started with an introduction and was followed by a question about arrays.

Phone screen, good stuff. They asked me relevant and appropriate questions. It was the best interview I'd had. Free food, wonderful people, and smart guys.