Two phone interviews and one on-site.

HR is rude. The hotel smells.

I also have to submit a paper copy (mail-in) receipt for expenses. Basically, they don't pay anything upfront.

In two days, I have to use my credit card to pay for the hotel and rental, despite having lost my job. And somehow, the receipt was lost, so they never paid me back!

Many regular expression questions. They ask you the same question, writing in Perl, Bash, and Python, as if this is a syntax test, not an interview. The interviewer was rude or unprepared.