1. Phone interview with the hiring manager.

Some basic technical questions were asked.

On the next day, I was informed by the recruiter to have an on-site interview.

1. Onsite interviews.

Met four or five developers one by one. With each of them, I spent about 30 minutes to an hour, and overall, the interviews were about four hours long.

All of them asked me pretty tough technical questions: OO design, CS questions, JavaScript questions, AngularJS questions, Java questions, etc.

1. I followed up with the recruiter.

Two weeks passed, and he still said, "We are still interviewing."

I've never heard back since then and figured that was their way of saying "No."

The knight's tour question.

Permutation using the phone keypad.