Let me first say this, I have had many interviews. This was by far the easiest one I ever had. I may have been lucky, but there's a chance it will be easy for you too. First, there are HireVue video interviews. Basically just record yourself answering generic questions. "Talk about a time you disagreed with a coworker, talk about a time you struggled, etc." Then you may be required to play some puzzle/pattern/math games to prove you have a brain. Next, there will be a coding assessment. Very easy leetcode type questions. After that is the phone screen with a HR Rep or Recruiter. Basic questions again, "Why do you like GM, talk about what you're looking for, etc." Lastly, you have 2 one-hour interviews with engineering manager or someone equivalent. This is where you may get lucky. I had almost no technical questions, just straight behavioral or talking about past experiences. This will be my only issue with the whole process. It took about a month or sparse email replies to none at all before I got an offer. Be sure to email people and stay on top of it. Good luck!

First, they send you an online Technical Assessment. Then, if you pass that round, you will interview with two developers. They look at your resume and ask in depth technical questions.