Google

It's not that difficult. You'll mostly be asked questions on Matrix multiplication and dynamic programming. Verma's DP playlist would help you. Gaurav Sen is also good to follow.

An internal recruiter, who found me on LinkedIn, emailed me. We set up a phone call and discussed my qualifications and the job. The recruiter then set up a technical call.

HR reached out and then scheduled video interviews. I did not pass the first round, but the overall experience was great. The people I met were nice and smart. I will try again next time.