The recruiter was very pushy. He called three times in one day, as if he had some sort of interview quota to meet.

He then proceeded to ask if I had any friends looking for work because they needed eight more applicants.

I asked if the job would require hardcore mathematics, and he lied, saying "no".

I went through two different interviews where I was asked very difficult mathematical questions. I have yet to hear back.

Math questions.

You will need a pen and paper.