I started with a phone interview with the hiring manager. Then, I had a formal interview consisting of meetings with multiple people within the hiring department, including the head of the department.

All of the interviewers asked good questions and appeared to be very knowledgeable.

Unfortunately, after being given verbal confirmation that I would be receiving a job offer, it never actually materialized. Phone calls, voicemails, and emails have gone unanswered. I'm not sure what happened; everything sounded great.

Questions on how I would approach a problem that they have already solved in the past.