Applied online and was contacted by a recruiter within the same week after solving a HackerRank challenge (medium difficulty).

The recruiter was very helpful and kind, and invited me for a phone interview.

The interviewer was not paying attention to suggestions or potential approaches for the problem. He was busy on his computer and sporadically saying that everything was fine, with a very bad tone.

The question was relatively easy, although the experience was very bad. I would think twice or more before accepting an offer.

It seems like a very desirable place to work for, but certainly the company should train and select their interviewers better.

Design a stack system interpreter for a list of instructions.

Possible operations:

• push (x)
• print
• add (with the last 2 elements on the stack)
• sub (with the last 2 elements on the stack) ...